The number 47679
47679 is a composite number with 8 divisors. Its prime factorisation is 3 × 23 × 691. Divisors (8): 1, 3, 23, 69, 691, 2073, 15893, 47679.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47679 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47679 is composite. Its prime factorisation is
- 3
The divisors add up to 66432; without 47679 itself that is 18753, so 47679 is deficient (18753 is less than 47679). Euler's totient φ(47679) = 30360 numbers up to 47679 share no factor with it.
- 4
The digits of 47679 add up to 33, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 127 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47679 = 3 \times 23 \times 691 \]
47679 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 66432 |
| Euler totient φ(n) | 30360 |
| Square | 2273287041 |
| Cube | 108388052827839 |
| Square root | 218.355215 |
| Digit sum / digital root | 33 / 6 |
| Collatz steps to 1 | 127 |
| Scientific notation | 4.7679 × |
47679 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand six hundred and seventy-nine |
| Binary (base 2) | 1011101000111111 |
| Octal (base 8) | 135077 |
| Hexadecimal (base 16) | BA3F |
| Base 3 | 2102101220 |
| As time | 47679 seconds = 13 h 14 min 39 s |
Is 47679 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 (47679 ÷ 3 = 15893) | 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 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 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 5) | 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 47679 a prime number?
No. 47679 = 3 × 23 × 691, so it is divisible by 3.
What are the factors of 47679?
1, 3, 23, 69, 691, 2073, 15893, 47679.
What is 47679 in binary?
1011101000111111 (hexadecimal BA3F, octal 135077).
What is the square root of 47679?
About 218.3552.
Is 47679 divisible by 3?
Yes. Its digits add up to 33, a multiple of 3.
What is special about the number 47679?
It is a composite number with 8 divisors.