The number 61473
61473 is a composite number with 8 divisors. Its prime factorisation is 3 × 31 × 661. Divisors (8): 1, 3, 31, 93, 661, 1983, 20491, 61473.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61473 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61473 is composite. Its prime factorisation is
- 3
The divisors add up to 84736; without 61473 itself that is 23263, so 61473 is deficient (23263 is less than 61473). Euler's totient φ(61473) = 39600 numbers up to 61473 share no factor with it.
- 4
The digits of 61473 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 117 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61473 = 3 \times 31 \times 661 \]
61473 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 84736 |
| Euler totient φ(n) | 39600 |
| Square | 3778929729 |
| Cube | 232302147230817 |
| Square root | 247.937492 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 117 |
| Scientific notation | 6.1473 × |
61473 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and seventy-three |
| Binary (base 2) | 1111000000100001 |
| Octal (base 8) | 170041 |
| Hexadecimal (base 16) | F021 |
| Base 3 | 10010022210 |
| As time | 61473 seconds = 17 h 4 min 33 s |
Is 61473 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (61473 ÷ 3 = 20491) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61473 a prime number?
No. 61473 = 3 × 31 × 661, so it is divisible by 3.
What are the factors of 61473?
1, 3, 31, 93, 661, 1983, 20491, 61473.
What is 61473 in binary?
1111000000100001 (hexadecimal F021, octal 170041).
What is the square root of 61473?
About 247.9375.
Is 61473 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 61473?
It is a composite number with 8 divisors.