Q: Is 667,628 a Prime Number?
A: No, 667,628 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 667628 can be evenly divided by 1 2 4 13 26 37 52 74 148 347 481 694 962 1,388 1,924 4,511 9,022 12,839 18,044 25,678 51,356 166,907 333,814 and 667,628, with no remainder.
Since 667,628 cannot be divided by just 1 and 667,628, it is not a prime number.