678 is made from 3 consecutive numbers so it is divisible by 3. The middle number of those 3 consecutive numbers is not divisible by 3, so 678 is NOT divisible by 9.
678 is the hypotenuse of Pythagorean triple 90-672-678. What is the greatest common factor of those 3 numbers?
Print the puzzles or type the solution on this excel file: 10 Factors 2015-11-09
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- 678 is a composite number.
- Prime factorization: 678 = 2 x 3 x 113
- The exponents in the prime factorization are 1, 1, and 1. Adding one to each and multiplying we get (1 + 1)(1 + 1)(1 + 1) = 2 x 2 x 2 = 8. Therefore 678 has exactly 8 factors.
- Factors of 678: 1, 2, 3, 6, 113, 226, 339, 678
- Factor pairs: 678 = 1 x 678, 2 x 339, 3 x 226, or 6 x 113
- 678 has no square factors that allow its square root to be simplified. √678 ≈ 26.038433.
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