The number 87167
87167 is a composite number with 4 divisors. Its prime factorisation is 67 × 1301. Divisors (4): 1, 67, 1301, 87167.
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How to work it out
- 1
What is special about 87167: a semiprime: 67 × 1301, the product of two primes.
- 2
87167 is composite. Its prime factorisation is
- 3
The divisors add up to 88536; without 87167 itself that is 1369, so 87167 is deficient (1369 is less than 87167). Euler's totient φ(87167) = 85800 numbers up to 87167 share no factor with it.
- 4
The digits of 87167 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 208 steps to reach 1.
LaTeX source of the formulas on this page
\[ 87167 = 67 \times 1301 \]
87167 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 88536 |
| Euler totient φ(n) | 85800 |
| Square | 7598085889 |
| Cube | 662302352686463 |
| Square root | 295.240580 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 208 |
| Scientific notation | 8.7167 × |
87167 in other forms
| Form | Value |
|---|---|
| In words | eighty-seven thousand one hundred and sixty-seven |
| Binary (base 2) | 10101010001111111 |
| Octal (base 8) | 252177 |
| Hexadecimal (base 16) | 1547F |
| Base 3 | 11102120102 |
| As time | 87167 seconds = 24 h 12 min 47 s |
Is 87167 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 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 7) | 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 87167 a prime number?
No. 87167 = 67 × 1301, so it is divisible by 67.
What are the factors of 87167?
1, 67, 1301, 87167.
What is 87167 in binary?
10101010001111111 (hexadecimal 1547F, octal 252177).
What is the square root of 87167?
About 295.2406.
Is 87167 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 87167?
87167 is a semiprime: 67 × 1301, the product of two primes.