Q: Is 638,004 a Prime Number?
A: No, 638,004 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 638004 can be evenly divided by 1 2 3 4 6 12 79 158 237 316 474 673 948 1,346 2,019 2,692 4,038 8,076 53,167 106,334 159,501 212,668 319,002 and 638,004, with no remainder.
Since 638,004 cannot be divided by just 1 and 638,004, it is not a prime number.