The number 6722
6722 is a composite number with 4 divisors. Its prime factorisation is 2 × 3361. Divisors (4): 1, 2, 3361, 6722.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 6722: a semiprime: 2 × 3361, the product of two primes.
- 2
6722 is composite. Its prime factorisation is
- 3
The divisors add up to 10086; without 6722 itself that is 3364, so 6722 is deficient (3364 is less than 6722). Euler's totient φ(6722) = 3360 numbers up to 6722 share no factor with it.
- 4
The digits of 6722 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 44 steps to reach 1.
LaTeX source of the formulas on this page
\[ 6722 = 2 \times 3361 \]
6722 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 10086 |
| Euler totient φ(n) | 3360 |
| Square | 45185284 |
| Cube | 303735479048 |
| Square root | 81.987804 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 44 |
| Scientific notation | 6.722 × |
6722 in other forms
| Form | Value |
|---|---|
| In words | six thousand seven hundred and twenty-two |
| Binary (base 2) | 1101001000010 |
| Octal (base 8) | 15102 |
| Hexadecimal (base 16) | 1A42 |
| Base 3 | 100012222 |
| As time | 6722 seconds = 1 h 52 min 2 s |
Is 6722 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (6722 ÷ 2 = 3361) | 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 2) | 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 2) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 6722 a prime number?
No. 6722 = 2 × 3361, so it is divisible by 2.
What are the factors of 6722?
1, 2, 3361, 6722.
What is 6722 in binary?
1101001000010 (hexadecimal 1A42, octal 15102).
What is the square root of 6722?
About 81.9878.
Is 6722 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 6722?
6722 is a semiprime: 2 × 3361, the product of two primes.