The number 74690
74690 is a composite number with 32 divisors. Its prime factorisation is 2 × 5 × 7 × 11 × 97. Divisors (32): 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 97, 110, 154, 194 … 74690.
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How to work it out
- 1
74690 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
74690 is composite. Its prime factorisation is
- 3
The divisors add up to 169344; without 74690 itself that is 94654, so 74690 is abundant (94654 is more than 74690). Euler's totient φ(74690) = 23040 numbers up to 74690 share no factor with it.
- 4
The digits of 74690 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74690 = 2 \times 5 \times 7 \times 11 \times 97 \]
74690 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 32 |
| Sum of divisors | 169344 |
| Euler totient φ(n) | 23040 |
| Square | 5578596100 |
| Cube | 416665342709000 |
| Square root | 273.294713 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 138 |
| Scientific notation | 7.469 × |
74690 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand six hundred and ninety |
| Binary (base 2) | 10010001111000010 |
| Octal (base 8) | 221702 |
| Hexadecimal (base 16) | 123C2 |
| Base 3 | 10210110022 |
| As time | 74690 seconds = 20 h 44 min 50 s |
Is 74690 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74690 ÷ 2 = 37345) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (74690 ÷ 5 = 14938) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (74690 ÷ 7 = 10670) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (74690 ÷ 10 = 7469) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (74690 ÷ 11 = 6790) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 74690 a prime number?
No. 74690 = 2 × 5 × 7 × 11 × 97, so it is divisible by 2.
What are the factors of 74690?
1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 97, 110, 154, 194, 385, 485, 679, 770, 970, 1067, 1358, 2134, 3395, 5335, 6790, 7469, 10670, 14938, 37345, 74690.
What is 74690 in binary?
10010001111000010 (hexadecimal 123C2, octal 221702).
What is the square root of 74690?
About 273.2947.
Is 74690 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 74690?
It is a composite number with 32 divisors.