The number 76622
76622 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 13 × 421. Divisors (16): 1, 2, 7, 13, 14, 26, 91, 182, 421, 842, 2947, 5473, 5894, 10946, 38311, 76622.
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How to work it out
- 1
What is special about 76622: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
76622 is composite. Its prime factorisation is
- 3
The divisors add up to 141792; without 76622 itself that is 65170, so 76622 is deficient (65170 is less than 76622). Euler's totient φ(76622) = 30240 numbers up to 76622 share no factor with it.
- 4
The digits of 76622 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 156 steps to reach 1.
LaTeX source of the formulas on this page
\[ 76622 = 2 \times 7 \times 13 \times 421 \]
76622 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 141792 |
| Euler totient φ(n) | 30240 |
| Square | 5870930884 |
| Cube | 449842466193848 |
| Square root | 276.806792 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 156 |
| Scientific notation | 7.6622 × |
76622 in other forms
| Form | Value |
|---|---|
| In words | seventy-six thousand six hundred and twenty-two |
| Binary (base 2) | 10010101101001110 |
| Octal (base 8) | 225516 |
| Hexadecimal (base 16) | 12B4E |
| Base 3 | 10220002212 |
| As time | 76622 seconds = 21 h 17 min 2 s |
Is 76622 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (76622 ÷ 2 = 38311) | 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 | No (remainder 2) | 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 (76622 ÷ 7 = 10946) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 76622 a prime number?
No. 76622 = 2 × 7 × 13 × 421, so it is divisible by 2.
What are the factors of 76622?
1, 2, 7, 13, 14, 26, 91, 182, 421, 842, 2947, 5473, 5894, 10946, 38311, 76622.
What is 76622 in binary?
10010101101001110 (hexadecimal 12B4E, octal 225516).
What is the square root of 76622?
About 276.8068.
Is 76622 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 76622?
76622 is a happy number: repeatedly adding the squares of its digits reaches 1.