The number 61671
61671 is a composite number with 8 divisors. Its prime factorisation is 3 × 61 × 337. Divisors (8): 1, 3, 61, 183, 337, 1011, 20557, 61671.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61671 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61671 is composite. Its prime factorisation is
- 3
The divisors add up to 83824; without 61671 itself that is 22153, so 61671 is deficient (22153 is less than 61671). Euler's totient φ(61671) = 40320 numbers up to 61671 share no factor with it.
- 4
The digits of 61671 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 166 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61671 = 3 \times 61 \times 337 \]
61671 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 83824 |
| Euler totient φ(n) | 40320 |
| Square | 3803312241 |
| Cube | 234554069214711 |
| Square root | 248.336465 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 166 |
| Scientific notation | 6.1671 × |
61671 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand six hundred and seventy-one |
| Binary (base 2) | 1111000011100111 |
| Octal (base 8) | 170347 |
| Hexadecimal (base 16) | F0E7 |
| Base 3 | 10010121010 |
| As time | 61671 seconds = 17 h 7 min 51 s |
Is 61671 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 (61671 ÷ 3 = 20557) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | 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 1) | 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 7) | 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 1) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61671 a prime number?
No. 61671 = 3 × 61 × 337, so it is divisible by 3.
What are the factors of 61671?
1, 3, 61, 183, 337, 1011, 20557, 61671.
What is 61671 in binary?
1111000011100111 (hexadecimal F0E7, octal 170347).
What is the square root of 61671?
About 248.3365.
Is 61671 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 61671?
It is a composite number with 8 divisors.