216568732 has 6 divisors (see below), whose sum is σ = 378995288. Its totient is φ = 108284364.

The previous prime is 216568711. The next prime is 216568739. The reversal of 216568732 is 237865612.

216568732 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 (216568739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27071088 + ... + 27071095.

Almost surely, 2^216568732 is an apocalyptic number.

It is an amenable number.

216568732 is a deficient number, since it is larger than the sum of its proper divisors (162426556).

216568732 is a wasteful number, since it uses less digits than its factorization.

216568732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54142187 (or 54142185 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 216568732 is about 14716.2743926579. The cubic root of 216568732 is about 600.5261421928.

The spelling of 216568732 in words is "two hundred sixteen million, five hundred sixty-eight thousand, seven hundred thirty-two".