The number 3715
3715 is a composite number with 4 divisors. Its prime factorisation is 5 × 743. Divisors (4): 1, 5, 743, 3715.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3715: a semiprime: 5 × 743, the product of two primes.
- 2
3715 is composite. Its prime factorisation is
- 3
The divisors add up to 4464; without 3715 itself that is 749, so 3715 is deficient (749 is less than 3715). Euler's totient φ(3715) = 2968 numbers up to 3715 share no factor with it.
- 4
The digits of 3715 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 38 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3715 = 5 \times 743 \]
3715 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 4464 |
| Euler totient φ(n) | 2968 |
| Square | 13801225 |
| Cube | 51271550875 |
| Square root | 60.950800 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 38 |
| Scientific notation | 3.715 × |
3715 in other forms
| Form | Value |
|---|---|
| In words | three thousand seven hundred and fifteen |
| Roman numerals | MMMDCCXV |
| Binary (base 2) | 111010000011 |
| Octal (base 8) | 7203 |
| Hexadecimal (base 16) | E83 |
| Base 3 | 12002121 |
| As time | 3715 seconds = 1 h 1 min 55 s |
Is 3715 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 (3715 ÷ 5 = 743) | 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 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 3) | 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 3715 a prime number?
No. 3715 = 5 × 743, so it is divisible by 5.
What are the factors of 3715?
1, 5, 743, 3715.
What is 3715 in binary?
111010000011 (hexadecimal E83, octal 7203).
What is the square root of 3715?
About 60.9508.
What is 3715 in Roman numerals?
MMMDCCXV.
Is 3715 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 3715?
3715 is a semiprime: 5 × 743, the product of two primes.