216613804 has 24 divisors (see below), whose sum is σ = 417806928. Its totient is φ = 97443840.

The previous prime is 216613781. The next prime is 216613811. The reversal of 216613804 is 408316612.

It is a happy number.

216613804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21109 + ... + 29644.

It is an arithmetic number, because the mean of its divisors is an integer number (17408622).

Almost surely, 2^216613804 is an apocalyptic number.

It is an amenable number.

216613804 is a deficient number, since it is larger than the sum of its proper divisors (201193124).

216613804 is a wasteful number, since it uses less digits than its factorization.

216613804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50865 (or 50863 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 216613804 is about 14717.8056788368. The cubic root of 216613804 is about 600.5677995403.

The spelling of 216613804 in words is "two hundred sixteen million, six hundred thirteen thousand, eight hundred four".