Q: Is 678,740 a Prime Number?
A: No, 678,740 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 678740 can be evenly divided by 1 2 4 5 10 20 33,937 67,874 135,748 169,685 339,370 and 678,740, with no remainder.
Since 678,740 cannot be divided by just 1 and 678,740, it is not a prime number.