The number 6729
6729 is a composite number with 4 divisors. Its prime factorisation is 3 × 2243. Divisors (4): 1, 3, 2243, 6729.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 6729: a semiprime: 3 × 2243, the product of two primes.
- 2
6729 is composite. Its prime factorisation is
- 3
The divisors add up to 8976; without 6729 itself that is 2247, so 6729 is deficient (2247 is less than 6729). Euler's totient φ(6729) = 4484 numbers up to 6729 share no factor with it.
- 4
The digits of 6729 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 137 steps to reach 1.
LaTeX source of the formulas on this page
\[ 6729 = 3 \times 2243 \]
6729 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 8976 |
| Euler totient φ(n) | 4484 |
| Square | 45279441 |
| Cube | 304685358489 |
| Square root | 82.030482 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 137 |
| Scientific notation | 6.729 × |
6729 in other forms
| Form | Value |
|---|---|
| In words | six thousand seven hundred and twenty-nine |
| Binary (base 2) | 1101001001001 |
| Octal (base 8) | 15111 |
| Hexadecimal (base 16) | 1A49 |
| Base 3 | 100020020 |
| As time | 6729 seconds = 1 h 52 min 9 s |
Is 6729 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 | Yes (6729 ÷ 3 = 2243) | 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 3) | 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 6) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 6729 a prime number?
No. 6729 = 3 × 2243, so it is divisible by 3.
What are the factors of 6729?
1, 3, 2243, 6729.
What is 6729 in binary?
1101001001001 (hexadecimal 1A49, octal 15111).
What is the square root of 6729?
About 82.0305.
Is 6729 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 6729?
6729 is a semiprime: 3 × 2243, the product of two primes.