Q: Is 1,561,661 a Composite Number?
A: Yes, 1,561,661 is a composite number.
The number 1,561,661 can be evenly divided by 1 61 25,601 and 1,561,661, with no remainder.
Since 1,561,661 cannot be divided by just 1 and 1,561,661, it is a composite number.