The number 61373
61373 is a composite number with 4 divisors. Its prime factorisation is 13 × 4721. Divisors (4): 1, 13, 4721, 61373.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 61373: a semiprime: 13 × 4721, the product of two primes.
- 2
61373 is composite. Its prime factorisation is
- 3
The divisors add up to 66108; without 61373 itself that is 4735, so 61373 is deficient (4735 is less than 61373). Euler's totient φ(61373) = 56640 numbers up to 61373 share no factor with it.
- 4
The digits of 61373 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 73 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61373 = 13 \times 4721 \]
61373 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 66108 |
| Euler totient φ(n) | 56640 |
| Square | 3766645129 |
| Cube | 231170311502117 |
| Square root | 247.735746 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 73 |
| Scientific notation | 6.1373 × |
61373 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand three hundred and seventy-three |
| Binary (base 2) | 1110111110111101 |
| Octal (base 8) | 167675 |
| Hexadecimal (base 16) | EFBD |
| Base 3 | 10010012002 |
| As time | 61373 seconds = 17 h 2 min 53 s |
Is 61373 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 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 5) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61373 a prime number?
No. 61373 = 13 × 4721, so it is divisible by 13.
What are the factors of 61373?
1, 13, 4721, 61373.
What is 61373 in binary?
1110111110111101 (hexadecimal EFBD, octal 167675).
What is the square root of 61373?
About 247.7357.
Is 61373 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 61373?
61373 is a semiprime: 13 × 4721, the product of two primes.