The number 67243
67243 is a composite number with 4 divisors. Its prime factorisation is 11 × 6113. Divisors (4): 1, 11, 6113, 67243.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67243: a semiprime: 11 × 6113, the product of two primes.
- 2
67243 is composite. Its prime factorisation is
- 3
The divisors add up to 73368; without 67243 itself that is 6125, so 67243 is deficient (6125 is less than 67243). Euler's totient φ(67243) = 61120 numbers up to 67243 share no factor with it.
- 4
The digits of 67243 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 112 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67243 = 11 \times 6113 \]
67243 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73368 |
| Euler totient φ(n) | 61120 |
| Square | 4521621049 |
| Cube | 304047364197907 |
| Square root | 259.312553 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 112 |
| Scientific notation | 6.7243 × |
67243 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand two hundred and forty-three |
| Binary (base 2) | 10000011010101011 |
| Octal (base 8) | 203253 |
| Hexadecimal (base 16) | 106AB |
| Base 3 | 10102020111 |
| As time | 67243 seconds = 18 h 40 min 43 s |
Is 67243 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 | No (remainder 3) | 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 1) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (67243 ÷ 11 = 6113) | 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 67243 a prime number?
No. 67243 = 11 × 6113, so it is divisible by 11.
What are the factors of 67243?
1, 11, 6113, 67243.
What is 67243 in binary?
10000011010101011 (hexadecimal 106AB, octal 203253).
What is the square root of 67243?
About 259.3126.
Is 67243 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 67243?
67243 is a semiprime: 11 × 6113, the product of two primes.