Primes / Is 90 prime?

Is 90 a Prime Number?

No90 = 2 x 3^2 x 5

90 is NOT prime: 2 × 45 = 90. That makes 2 a genuine divisor of 90 beyond 1 and 90 itself. Fully broken down, 90 = 2 × 3^2 × 5, for 12 divisors total. 90 sits between primes 89 and 97, 1 below and 7 above. 90: 2, 3, 5, 6, 9, 10 divide 90 evenly, checked against 2-12. 90 is even, digit sum 9 for 90, digital root 9 for 90. 90 has 3 primes within 10 of 90.