Q: Is 677,678 a Prime Number?
A: No, 677,678 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 677678 can be evenly divided by 1 2 338,839 and 677,678, with no remainder.
Since 677,678 cannot be divided by just 1 and 677,678, it is not a prime number.