8663216 has 20 divisors (see below), whose sum is σ = 16848624. Its totient is φ = 4315200.

The previous prime is 8663209. The next prime is 8663261. The reversal of 8663216 is 6123668.

8663216 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8663216² = 150102622925312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106 + ... + 5846.

Almost surely, 2^8663216 is an apocalyptic number.

It is an amenable number.

8663216 is a deficient number, since it is larger than the sum of its proper divisors (8185408).

8663216 is a wasteful number, since it uses less digits than its factorization.

8663216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2054 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 8663216 is about 2943.3341638353. The cubic root of 8663216 is about 205.3807399770.

The spelling of 8663216 in words is "eight million, six hundred sixty-three thousand, two hundred sixteen".