Q: Is 655,540 a Prime Number?
A: No, 655,540 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 655540 can be evenly divided by 1 2 4 5 10 20 73 146 292 365 449 730 898 1,460 1,796 2,245 4,490 8,980 32,777 65,554 131,108 163,885 327,770 and 655,540, with no remainder.
Since 655,540 cannot be divided by just 1 and 655,540, it is not a prime number.