The number 2679
2679 is a composite number with 8 divisors. Its prime factorisation is 3 × 19 × 47. Divisors (8): 1, 3, 19, 47, 57, 141, 893, 2679.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
2679 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
2679 is composite. Its prime factorisation is
- 3
The divisors add up to 3840; without 2679 itself that is 1161, so 2679 is deficient (1161 is less than 2679). Euler's totient φ(2679) = 1656 numbers up to 2679 share no factor with it.
- 4
The digits of 2679 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 27 steps to reach 1.
LaTeX source of the formulas on this page
\[ 2679 = 3 \times 19 \times 47 \]
2679 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 3840 |
| Euler totient φ(n) | 1656 |
| Square | 7177041 |
| Cube | 19227292839 |
| Square root | 51.759057 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 27 |
| Scientific notation | 2.679 × |
2679 in other forms
| Form | Value |
|---|---|
| In words | two thousand six hundred and seventy-nine |
| Roman numerals | MMDCLXXIX |
| Binary (base 2) | 101001110111 |
| Octal (base 8) | 5167 |
| Hexadecimal (base 16) | A77 |
| Base 3 | 10200020 |
| As time | 2679 seconds = 44 min 39 s |
Is 2679 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 (2679 ÷ 3 = 893) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | 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 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 7) | 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 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 2679 a prime number?
No. 2679 = 3 × 19 × 47, so it is divisible by 3.
What are the factors of 2679?
1, 3, 19, 47, 57, 141, 893, 2679.
What is 2679 in binary?
101001110111 (hexadecimal A77, octal 5167).
What is the square root of 2679?
About 51.7591.
What is 2679 in Roman numerals?
MMDCLXXIX.
Is 2679 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 2679?
It is a composite number with 8 divisors.