Q: Is 6,390 a Composite Number?
A: Yes, 6,390 is a composite number.
The number 6,390 can be evenly divided by 1 2 3 5 6 9 10 15 18 30 45 71 90 142 213 355 426 639 710 1,065 1,278 2,130 3,195 and 6,390, with no remainder.
Since 6,390 cannot be divided by just 1 and 6,390, it is a composite number.