The number 67321
67321 is a composite number with 4 divisors. Its prime factorisation is 23 × 2927. Divisors (4): 1, 23, 2927, 67321.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67321: a semiprime: 23 × 2927, the product of two primes.
- 2
67321 is composite. Its prime factorisation is
- 3
The divisors add up to 70272; without 67321 itself that is 2951, so 67321 is deficient (2951 is less than 67321). Euler's totient φ(67321) = 64372 numbers up to 67321 share no factor with it.
- 4
The digits of 67321 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67321 = 23 \times 2927 \]
67321 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 70272 |
| Euler totient φ(n) | 64372 |
| Square | 4532117041 |
| Cube | 305106651317161 |
| Square root | 259.462907 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 68 |
| Scientific notation | 6.7321 × |
67321 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand three hundred and twenty-one |
| Binary (base 2) | 10000011011111001 |
| Octal (base 8) | 203371 |
| Hexadecimal (base 16) | 106F9 |
| Base 3 | 10102100101 |
| As time | 67321 seconds = 18 h 42 min 1 s |
Is 67321 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 2) | 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 1) | 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 67321 a prime number?
No. 67321 = 23 × 2927, so it is divisible by 23.
What are the factors of 67321?
1, 23, 2927, 67321.
What is 67321 in binary?
10000011011111001 (hexadecimal 106F9, octal 203371).
What is the square root of 67321?
About 259.4629.
Is 67321 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 67321?
67321 is a semiprime: 23 × 2927, the product of two primes.