The number 80061
80061 is a composite number with 4 divisors. Its prime factorisation is 3 × 26687. Divisors (4): 1, 3, 26687, 80061.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80061: a semiprime: 3 × 26687, the product of two primes.
- 2
80061 is composite. Its prime factorisation is
- 3
The divisors add up to 106752; without 80061 itself that is 26691, so 80061 is deficient (26691 is less than 80061). Euler's totient φ(80061) = 53372 numbers up to 80061 share no factor with it.
- 4
The digits of 80061 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80061 = 3 \times 26687 \]
80061 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 106752 |
| Euler totient φ(n) | 53372 |
| Square | 6409763721 |
| Cube | 513172093266981 |
| Square root | 282.950526 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 68 |
| Scientific notation | 8.0061 × |
80061 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand and sixty-one |
| Binary (base 2) | 10011100010111101 |
| Octal (base 8) | 234275 |
| Hexadecimal (base 16) | 138BD |
| Base 3 | 11001211020 |
| As time | 80061 seconds = 22 h 14 min 21 s |
Is 80061 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 (80061 ÷ 3 = 26687) | 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 | No (remainder 1) | 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 5) | 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 1) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80061 a prime number?
No. 80061 = 3 × 26687, so it is divisible by 3.
What are the factors of 80061?
1, 3, 26687, 80061.
What is 80061 in binary?
10011100010111101 (hexadecimal 138BD, octal 234275).
What is the square root of 80061?
About 282.9505.
Is 80061 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 80061?
80061 is a semiprime: 3 × 26687, the product of two primes.