The number 67513
67513 is a composite number with 4 divisors. Its prime factorisation is 181 × 373. Divisors (4): 1, 181, 373, 67513.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67513: a semiprime: 181 × 373, the product of two primes.
- 2
67513 is composite. Its prime factorisation is
- 3
The divisors add up to 68068; without 67513 itself that is 555, so 67513 is deficient (555 is less than 67513). Euler's totient φ(67513) = 66960 numbers up to 67513 share no factor with it.
- 4
The digits of 67513 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67513 = 181 \times 373 \]
67513 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 68068 |
| Euler totient φ(n) | 66960 |
| Square | 4558005169 |
| Cube | 307724602974697 |
| Square root | 259.832638 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 68 |
| Scientific notation | 6.7513 × |
67513 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand five hundred and thirteen |
| Binary (base 2) | 10000011110111001 |
| Octal (base 8) | 203671 |
| Hexadecimal (base 16) | 107B9 |
| Base 3 | 10102121111 |
| As time | 67513 seconds = 18 h 45 min 13 s |
Is 67513 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 3) | 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 5) | 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 4) | 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 6) | 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 67513 a prime number?
No. 67513 = 181 × 373, so it is divisible by 181.
What are the factors of 67513?
1, 181, 373, 67513.
What is 67513 in binary?
10000011110111001 (hexadecimal 107B9, octal 203671).
What is the square root of 67513?
About 259.8326.
Is 67513 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 67513?
67513 is a semiprime: 181 × 373, the product of two primes.