216160866 has 16 divisors (see below), whose sum is σ = 480357600. Its totient is φ = 72053604.

The previous prime is 216160859. The next prime is 216160883. The reversal of 216160866 is 668061612.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 216160866.

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 in 7 ways as a sum of consecutive naturals, for example, 2001436 + ... + 2001543.

It is an arithmetic number, because the mean of its divisors is an integer number (30022350).

Almost surely, 2^216160866 is an apocalyptic number.

216160866 is an abundant number, since it is smaller than the sum of its proper divisors (264196734).

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

216160866 is a wasteful number, since it uses less digits than its factorization.

216160866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002990 (or 4002984 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 216160866 is about 14702.4102105743. The cubic root of 216160866 is about 600.1489130385.

The spelling of 216160866 in words is "two hundred sixteen million, one hundred sixty thousand, eight hundred sixty-six".