215345568 has 24 divisors (see below), whose sum is σ = 565282368. Its totient is φ = 71781824.

The previous prime is 215345567. The next prime is 215345609. The reversal of 215345568 is 865543512.

215345568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (215345567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121496 + ... + 1121687.

It is an arithmetic number, because the mean of its divisors is an integer number (23553432).

Almost surely, 2^215345568 is an apocalyptic number.

It is an amenable number.

215345568 is an abundant number, since it is smaller than the sum of its proper divisors (349936800).

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

215345568 is a wasteful number, since it uses less digits than its factorization.

215345568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243196 (or 2243188 counting only the distinct ones).

The product of its digits is 144000, while the sum is 39.

The square root of 215345568 is about 14674.6573384185. The cubic root of 215345568 is about 599.3934314421.

The spelling of 215345568 in words is "two hundred fifteen million, three hundred forty-five thousand, five hundred sixty-eight".