The number 60721
60721 is a composite number with 4 divisors. Its prime factorisation is 41 × 1481. Divisors (4): 1, 41, 1481, 60721.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 60721: a semiprime: 41 × 1481, the product of two primes.
- 2
60721 is composite. Its prime factorisation is
- 3
The divisors add up to 62244; without 60721 itself that is 1523, so 60721 is deficient (1523 is less than 60721). Euler's totient φ(60721) = 59200 numbers up to 60721 share no factor with it.
- 4
The digits of 60721 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 60721 = 41 \times 1481 \]
60721 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 62244 |
| Euler totient φ(n) | 59200 |
| Square | 3687039841 |
| Cube | 223880746185361 |
| Square root | 246.416314 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 135 |
| Scientific notation | 6.0721 × |
60721 in other forms
| Form | Value |
|---|---|
| In words | sixty thousand seven hundred and twenty-one |
| Binary (base 2) | 1110110100110001 |
| Octal (base 8) | 166461 |
| Hexadecimal (base 16) | ED31 |
| Base 3 | 10002021221 |
| As time | 60721 seconds = 16 h 52 min 1 s |
Is 60721 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 1) | 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 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 7) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 60721 a prime number?
No. 60721 = 41 × 1481, so it is divisible by 41.
What are the factors of 60721?
1, 41, 1481, 60721.
What is 60721 in binary?
1110110100110001 (hexadecimal ED31, octal 166461).
What is the square root of 60721?
About 246.4163.
Is 60721 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 60721?
60721 is a semiprime: 41 × 1481, the product of two primes.