The number 61427
61427 is a composite number with 8 divisors. Its prime factorisation is 19 × 53 × 61. Divisors (8): 1, 19, 53, 61, 1007, 1159, 3233, 61427.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61427 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61427 is composite. Its prime factorisation is
- 3
The divisors add up to 66960; without 61427 itself that is 5533, so 61427 is deficient (5533 is less than 61427). Euler's totient φ(61427) = 56160 numbers up to 61427 share no factor with it.
- 4
The digits of 61427 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61427 = 19 \times 53 \times 61 \]
61427 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 66960 |
| Euler totient φ(n) | 56160 |
| Square | 3773276329 |
| Cube | 231781045061483 |
| Square root | 247.844709 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 60 |
| Scientific notation | 6.1427 × |
61427 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and twenty-seven |
| Binary (base 2) | 1110111111110011 |
| Octal (base 8) | 167763 |
| Hexadecimal (base 16) | EFF3 |
| Base 3 | 10010021002 |
| As time | 61427 seconds = 17 h 3 min 47 s |
Is 61427 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 | No (remainder 2) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61427 a prime number?
No. 61427 = 19 × 53 × 61, so it is divisible by 19.
What are the factors of 61427?
1, 19, 53, 61, 1007, 1159, 3233, 61427.
What is 61427 in binary?
1110111111110011 (hexadecimal EFF3, octal 167763).
What is the square root of 61427?
About 247.8447.
Is 61427 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 61427?
It is a composite number with 8 divisors.