The number 674
674 is a composite number with 4 divisors. Its prime factorisation is 2 × 337. Divisors (4): 1, 2, 337, 674.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 674: a semiprime: 2 × 337, the product of two primes.
- 2
674 is composite. Its prime factorisation is
- 3
The divisors add up to 1014; without 674 itself that is 340, so 674 is deficient (340 is less than 674). Euler's totient φ(674) = 336 numbers up to 674 share no factor with it.
- 4
The digits of 674 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 113 steps to reach 1.
LaTeX source of the formulas on this page
\[ 674 = 2 \times 337 \]
674 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1014 |
| Euler totient φ(n) | 336 |
| Square | 454276 |
| Cube | 306182024 |
| Square root | 25.961510 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 113 |
| Scientific notation | 6.74 × |
674 in other forms
| Form | Value |
|---|---|
| In words | six hundred and seventy-four |
| Roman numerals | DCLXXIV |
| Binary (base 2) | 1010100010 |
| Octal (base 8) | 1242 |
| Hexadecimal (base 16) | 2A2 |
| Base 3 | 220222 |
| As time | 674 seconds = 11 min 14 s |
Is 674 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (674 ÷ 2 = 337) | 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 4) | 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 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 674 a prime number?
No. 674 = 2 × 337, so it is divisible by 2.
What are the factors of 674?
1, 2, 337, 674.
What is 674 in binary?
1010100010 (hexadecimal 2A2, octal 1242).
What is the square root of 674?
About 25.9615.
What is 674 in Roman numerals?
DCLXXIV.
Is 674 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 674?
674 is a semiprime: 2 × 337, the product of two primes.