The number 33689
33689 is a composite number with 4 divisors. Its prime factorisation is 59 × 571. Divisors (4): 1, 59, 571, 33689.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 33689: a semiprime: 59 × 571, the product of two primes.
- 2
33689 is composite. Its prime factorisation is
- 3
The divisors add up to 34320; without 33689 itself that is 631, so 33689 is deficient (631 is less than 33689). Euler's totient φ(33689) = 33060 numbers up to 33689 share no factor with it.
- 4
The digits of 33689 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 67 steps to reach 1.
LaTeX source of the formulas on this page
\[ 33689 = 59 \times 571 \]
33689 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 34320 |
| Euler totient φ(n) | 33060 |
| Square | 1134948721 |
| Cube | 38235287461769 |
| Square root | 183.545635 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 67 |
| Scientific notation | 3.3689 × |
33689 in other forms
| Form | Value |
|---|---|
| In words | thirty-three thousand six hundred and eighty-nine |
| Binary (base 2) | 1000001110011001 |
| Octal (base 8) | 101631 |
| Hexadecimal (base 16) | 8399 |
| Base 3 | 1201012202 |
| As time | 33689 seconds = 9 h 21 min 29 s |
Is 33689 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 33689 a prime number?
No. 33689 = 59 × 571, so it is divisible by 59.
What are the factors of 33689?
1, 59, 571, 33689.
What is 33689 in binary?
1000001110011001 (hexadecimal 8399, octal 101631).
What is the square root of 33689?
About 183.5456.
Is 33689 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 33689?
33689 is a semiprime: 59 × 571, the product of two primes.