Q: Is 640,340 a Composite Number?
A: Yes, 640,340 is a composite number.
The number 640,340 can be evenly divided by 1 2 4 5 10 20 101 202 317 404 505 634 1,010 1,268 1,585 2,020 3,170 6,340 32,017 64,034 128,068 160,085 320,170 and 640,340, with no remainder.
Since 640,340 cannot be divided by just 1 and 640,340, it is a composite number.