The number 3485
3485 is a composite number with 8 divisors. Its prime factorisation is 5 × 17 × 41. Divisors (8): 1, 5, 17, 41, 85, 205, 697, 3485.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
3485 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
3485 is composite. Its prime factorisation is
- 3
The divisors add up to 4536; without 3485 itself that is 1051, so 3485 is deficient (1051 is less than 3485). Euler's totient φ(3485) = 2560 numbers up to 3485 share no factor with it.
- 4
The digits of 3485 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 180 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3485 = 5 \times 17 \times 41 \]
3485 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 4536 |
| Euler totient φ(n) | 2560 |
| Square | 12145225 |
| Cube | 42326109125 |
| Square root | 59.033889 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 180 |
| Scientific notation | 3.485 × |
3485 in other forms
| Form | Value |
|---|---|
| In words | three thousand four hundred and eighty-five |
| Roman numerals | MMMCDLXXXV |
| Binary (base 2) | 110110011101 |
| Octal (base 8) | 6635 |
| Hexadecimal (base 16) | D9D |
| Base 3 | 11210002 |
| As time | 3485 seconds = 58 min 5 s |
Is 3485 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 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (3485 ÷ 5 = 697) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 3485 a prime number?
No. 3485 = 5 × 17 × 41, so it is divisible by 5.
What are the factors of 3485?
1, 5, 17, 41, 85, 205, 697, 3485.
What is 3485 in binary?
110110011101 (hexadecimal D9D, octal 6635).
What is the square root of 3485?
About 59.0339.
What is 3485 in Roman numerals?
MMMCDLXXXV.
Is 3485 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 3485?
It is a composite number with 8 divisors.