The number 67387
67387 is a composite number with 4 divisors. Its prime factorisation is 79 × 853. Divisors (4): 1, 79, 853, 67387.
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How to work it out
- 1
What is special about 67387: a semiprime: 79 × 853, the product of two primes.
- 2
67387 is composite. Its prime factorisation is
- 3
The divisors add up to 68320; without 67387 itself that is 933, so 67387 is deficient (933 is less than 67387). Euler's totient φ(67387) = 66456 numbers up to 67387 share no factor with it.
- 4
The digits of 67387 add up to 31, 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
\[ 67387 = 79 \times 853 \]
67387 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 68320 |
| Euler totient φ(n) | 66456 |
| Square | 4541007769 |
| Cube | 306004890529603 |
| Square root | 259.590061 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 68 |
| Scientific notation | 6.7387 × |
67387 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand three hundred and eighty-seven |
| Binary (base 2) | 10000011100111011 |
| Octal (base 8) | 203473 |
| Hexadecimal (base 16) | 1073B |
| Base 3 | 10102102211 |
| As time | 67387 seconds = 18 h 43 min 7 s |
Is 67387 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 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 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 3) | 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 7) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67387 a prime number?
No. 67387 = 79 × 853, so it is divisible by 79.
What are the factors of 67387?
1, 79, 853, 67387.
What is 67387 in binary?
10000011100111011 (hexadecimal 1073B, octal 203473).
What is the square root of 67387?
About 259.5901.
Is 67387 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 67387?
67387 is a semiprime: 79 × 853, the product of two primes.