Q: Is 637,648 a Prime Number?
A: No, 637,648 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 637648 can be evenly divided by 1 2 4 8 11 16 22 44 88 176 3,623 7,246 14,492 28,984 39,853 57,968 79,706 159,412 318,824 and 637,648, with no remainder.
Since 637,648 cannot be divided by just 1 and 637,648, it is not a prime number.