Q: Is 21,606 a Composite Number?
A: Yes, 21,606 is a composite number.
The number 21,606 can be evenly divided by 1 2 3 6 13 26 39 78 277 554 831 1,662 3,601 7,202 10,803 and 21,606, with no remainder.
Since 21,606 cannot be divided by just 1 and 21,606, it is a composite number.