The number 87673
87673 is a composite number with 4 divisors. Its prime factorisation is 73 × 1201. Divisors (4): 1, 73, 1201, 87673.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 87673: a semiprime: 73 × 1201, the product of two primes.
- 2
87673 is composite. Its prime factorisation is
- 3
The divisors add up to 88948; without 87673 itself that is 1275, so 87673 is deficient (1275 is less than 87673). Euler's totient φ(87673) = 86400 numbers up to 87673 share no factor with it.
- 4
The digits of 87673 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 164 steps to reach 1.
LaTeX source of the formulas on this page
\[ 87673 = 73 \times 1201 \]
87673 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 88948 |
| Euler totient φ(n) | 86400 |
| Square | 7686554929 |
| Cube | 673903330290217 |
| Square root | 296.096268 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 164 |
| Scientific notation | 8.7673 × |
87673 in other forms
| Form | Value |
|---|---|
| In words | eighty-seven thousand six hundred and seventy-three |
| Binary (base 2) | 10101011001111001 |
| Octal (base 8) | 253171 |
| Hexadecimal (base 16) | 15679 |
| Base 3 | 11110021011 |
| As time | 87673 seconds = 24 h 21 min 13 s |
Is 87673 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 3) | 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 87673 a prime number?
No. 87673 = 73 × 1201, so it is divisible by 73.
What are the factors of 87673?
1, 73, 1201, 87673.
What is 87673 in binary?
10101011001111001 (hexadecimal 15679, octal 253171).
What is the square root of 87673?
About 296.0963.
Is 87673 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 87673?
87673 is a semiprime: 73 × 1201, the product of two primes.