216560568 has 64 divisors (see below), whose sum is σ = 620017920. Its totient is φ = 61747200.

The previous prime is 216560543. The next prime is 216560573. The reversal of 216560568 is 865065612.

It is a super-2 number, since 2×216560568² = 93796959224965248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106683 + ... + 108693.

It is an arithmetic number, because the mean of its divisors is an integer number (9687780).

Almost surely, 2^216560568 is an apocalyptic number.

216560568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216560568 is an abundant number, since it is smaller than the sum of its proper divisors (403457352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216560568 is a wasteful number, since it uses less digits than its factorization.

216560568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2664 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 216560568 is about 14715.9970100568. The cubic root of 216560568 is about 600.5185960788.

The spelling of 216560568 in words is "two hundred sixteen million, five hundred sixty thousand, five hundred sixty-eight".