The number 682
682 is a composite number with 8 divisors. Its prime factorisation is 2 × 11 × 31. Divisors (8): 1, 2, 11, 22, 31, 62, 341, 682.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
682 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
682 is composite. Its prime factorisation is
- 3
The divisors add up to 1152; without 682 itself that is 470, so 682 is deficient (470 is less than 682). Euler's totient φ(682) = 300 numbers up to 682 share no factor with it.
- 4
The digits of 682 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 12 steps to reach 1.
LaTeX source of the formulas on this page
\[ 682 = 2 \times 11 \times 31 \]
682 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 1152 |
| Euler totient φ(n) | 300 |
| Square | 465124 |
| Cube | 317214568 |
| Square root | 26.115130 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 12 |
| Scientific notation | 6.82 × |
682 in other forms
| Form | Value |
|---|---|
| In words | six hundred and eighty-two |
| Roman numerals | DCLXXXII |
| Binary (base 2) | 1010101010 |
| Octal (base 8) | 1252 |
| Hexadecimal (base 16) | 2AA |
| Base 3 | 221021 |
| As time | 682 seconds = 11 min 22 s |
Is 682 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (682 ÷ 2 = 341) | 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 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 7) | 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 | Yes (682 ÷ 11 = 62) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 682 a prime number?
No. 682 = 2 × 11 × 31, so it is divisible by 2.
What are the factors of 682?
1, 2, 11, 22, 31, 62, 341, 682.
What is 682 in binary?
1010101010 (hexadecimal 2AA, octal 1252).
What is the square root of 682?
About 26.1151.
What is 682 in Roman numerals?
DCLXXXII.
Is 682 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 682?
It is a composite number with 8 divisors.