The number 67015
67015 is a composite number with 8 divisors. Its prime factorisation is 5 × 13 × 1031. Divisors (8): 1, 5, 13, 65, 1031, 5155, 13403, 67015.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
67015 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
67015 is composite. Its prime factorisation is
- 3
The divisors add up to 86688; without 67015 itself that is 19673, so 67015 is deficient (19673 is less than 67015). Euler's totient φ(67015) = 49440 numbers up to 67015 share no factor with it.
- 4
The digits of 67015 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 143 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67015 = 5 \times 13 \times 1031 \]
67015 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 86688 |
| Euler totient φ(n) | 49440 |
| Square | 4491010225 |
| Cube | 300965050228375 |
| Square root | 258.872556 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 143 |
| Scientific notation | 6.7015 × |
67015 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand and fifteen |
| Binary (base 2) | 10000010111000111 |
| Octal (base 8) | 202707 |
| Hexadecimal (base 16) | 105C7 |
| Base 3 | 10101221001 |
| As time | 67015 seconds = 18 h 36 min 55 s |
Is 67015 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 | No (remainder 1) | 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 | Yes (67015 ÷ 5 = 13403) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67015 a prime number?
No. 67015 = 5 × 13 × 1031, so it is divisible by 5.
What are the factors of 67015?
1, 5, 13, 65, 1031, 5155, 13403, 67015.
What is 67015 in binary?
10000010111000111 (hexadecimal 105C7, octal 202707).
What is the square root of 67015?
About 258.8726.
Is 67015 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 67015?
It is a composite number with 8 divisors.