The number 67994
67994 is a composite number with 4 divisors. Its prime factorisation is 2 × 33997. Divisors (4): 1, 2, 33997, 67994.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67994: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 33997, the product of two primes.
- 2
67994 is composite. Its prime factorisation is
- 3
The divisors add up to 101994; without 67994 itself that is 34000, so 67994 is deficient (34000 is less than 67994). Euler's totient φ(67994) = 33996 numbers up to 67994 share no factor with it.
- 4
The digits of 67994 add up to 35, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 130 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67994 = 2 \times 33997 \]
67994 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 101994 |
| Euler totient φ(n) | 33996 |
| Square | 4623184036 |
| Cube | 314348775343784 |
| Square root | 260.756591 |
| Digit sum / digital root | 35 / 8 |
| Collatz steps to 1 | 130 |
| Scientific notation | 6.7994 × |
67994 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand nine hundred and ninety-four |
| Binary (base 2) | 10000100110011010 |
| Octal (base 8) | 204632 |
| Hexadecimal (base 16) | 1099A |
| Base 3 | 10110021022 |
| As time | 67994 seconds = 18 h 53 min 14 s |
Is 67994 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67994 ÷ 2 = 33997) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 2) | 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 4) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67994 a prime number?
No. 67994 = 2 × 33997, so it is divisible by 2.
What are the factors of 67994?
1, 2, 33997, 67994.
What is 67994 in binary?
10000100110011010 (hexadecimal 1099A, octal 204632).
What is the square root of 67994?
About 260.7566.
Is 67994 divisible by 3?
No. Its digits add up to 35, which is not a multiple of 3.
What is special about the number 67994?
67994 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 33997, the product of two primes.