216462656 has 14 divisors (see below), whose sum is σ = 429543210. Its totient is φ = 108231296.

The previous prime is 216462643. The next prime is 216462721. The reversal of 216462656 is 656264612.

216462656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 175297600 + 41165056 = 13240^2 + 6416^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691051 + ... + 1691178.

Almost surely, 2^216462656 is an apocalyptic number.

It is an amenable number.

216462656 is a deficient number, since it is larger than the sum of its proper divisors (213080554).

216462656 is an equidigital number, since it uses as much as digits as its factorization.

216462656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382241 (or 3382231 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 216462656 is about 14712.6699140571. The cubic root of 216462656 is about 600.4280796922.

The spelling of 216462656 in words is "two hundred sixteen million, four hundred sixty-two thousand, six hundred fifty-six".