216616304 has 10 divisors (see below), whose sum is σ = 419694120. Its totient is φ = 108308144.

The previous prime is 216616303. The next prime is 216616333. The reversal of 216616304 is 403616612.

It is a happy number.

216616304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216616303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769244 + ... + 6769275.

It is an arithmetic number, because the mean of its divisors is an integer number (41969412).

Almost surely, 2^216616304 is an apocalyptic number.

It is an amenable number.

216616304 is a deficient number, since it is larger than the sum of its proper divisors (203077816).

216616304 is a wasteful number, since it uses less digits than its factorization.

216616304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13538527 (or 13538521 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 216616304 is about 14717.8906097307. The cubic root of 216616304 is about 600.5701099713.

The spelling of 216616304 in words is "two hundred sixteen million, six hundred sixteen thousand, three hundred four".