216330568 has 8 divisors (see below), whose sum is σ = 405619830. Its totient is φ = 108165280.

The previous prime is 216330553. The next prime is 216330581. The reversal of 216330568 is 865033612.

It can be written as a sum of positive squares in only one way, i.e., 122279364 + 94051204 = 11058^2 + 9698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13520653 + ... + 13520668.

Almost surely, 2^216330568 is an apocalyptic number.

It is an amenable number.

216330568 is a deficient number, since it is larger than the sum of its proper divisors (189289262).

216330568 is a wasteful number, since it uses less digits than its factorization.

216330568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27041327 (or 27041323 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 216330568 is about 14708.1803089301. The cubic root of 216330568 is about 600.3059254710.

The spelling of 216330568 in words is "two hundred sixteen million, three hundred thirty thousand, five hundred sixty-eight".