Q: Is 637,940 a Prime Number?
A: No, 637,940 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 637940 can be evenly divided by 1 2 4 5 10 20 167 191 334 382 668 764 835 955 1,670 1,910 3,340 3,820 31,897 63,794 127,588 159,485 318,970 and 637,940, with no remainder.
Since 637,940 cannot be divided by just 1 and 637,940, it is not a prime number.