Q: Is 671,661 a Composite Number?
A: Yes, 671,661 is a composite number.
The number 671,661 can be evenly divided by 1 3 9 37 111 333 2,017 6,051 18,153 74,629 223,887 and 671,661, with no remainder.
Since 671,661 cannot be divided by just 1 and 671,661, it is a composite number.