The number 3455
3455 is a composite number with 4 divisors. Its prime factorisation is 5 × 691. Divisors (4): 1, 5, 691, 3455.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3455: a semiprime: 5 × 691, the product of two primes.
- 2
3455 is composite. Its prime factorisation is
- 3
The divisors add up to 4152; without 3455 itself that is 697, so 3455 is deficient (697 is less than 3455). Euler's totient φ(3455) = 2760 numbers up to 3455 share no factor with it.
- 4
The digits of 3455 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 56 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3455 = 5 \times 691 \]
3455 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 4152 |
| Euler totient φ(n) | 2760 |
| Square | 11937025 |
| Cube | 41242421375 |
| Square root | 58.779248 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 56 |
| Scientific notation | 3.455 × |
3455 in other forms
| Form | Value |
|---|---|
| In words | three thousand four hundred and fifty-five |
| Roman numerals | MMMCDLV |
| Binary (base 2) | 110101111111 |
| Octal (base 8) | 6577 |
| Hexadecimal (base 16) | D7F |
| Base 3 | 11201222 |
| As time | 3455 seconds = 57 min 35 s |
Is 3455 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (3455 ÷ 5 = 691) | 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 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 8) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 3455 a prime number?
No. 3455 = 5 × 691, so it is divisible by 5.
What are the factors of 3455?
1, 5, 691, 3455.
What is 3455 in binary?
110101111111 (hexadecimal D7F, octal 6577).
What is the square root of 3455?
About 58.7792.
What is 3455 in Roman numerals?
MMMCDLV.
Is 3455 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 3455?
3455 is a semiprime: 5 × 691, the product of two primes.