Q: Is 801,640 a Prime Number?
A: No, 801,640 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 801640 can be evenly divided by 1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 98 140 196 245 280 392 409 490 818 980 1,636 1,960 2,045 2,863 3,272 4,090 5,726 8,180 11,452 14,315 16,360 20,041 22,904 28,630 40,082 57,260 80,164 100,205 114,520 160,328 200,410 400,820 and 801,640, with no remainder.
Since 801,640 cannot be divided by just 1 and 801,640, it is not a prime number.