66 is composite.
All even numbers, except 2, are composite.
composite
66-(1,2,3,6,11,22,33,66) Composite
66 is a composite number because it has more than two factors
2, 3 and 11
23 is prime, 66 is composite.
66
No. All whole numbers ending in six are composite.
It is composite because it has more than two factors
132 = 2 * 66 (other factorisations are also possible). A composite number is defined as one that can be factorised in such a way.
66>> 6+6=12