Q: Is 655,520 a Prime Number?
A: No, 655,520 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 655520 can be evenly divided by 1 2 4 5 8 10 16 17 20 32 34 40 68 80 85 136 160 170 241 272 340 482 544 680 964 1,205 1,360 1,928 2,410 2,720 3,856 4,097 4,820 7,712 8,194 9,640 16,388 19,280 20,485 32,776 38,560 40,970 65,552 81,940 131,104 163,880 327,760 and 655,520, with no remainder.
Since 655,520 cannot be divided by just 1 and 655,520, it is not a prime number.