166011564 has 24 divisors (see below), whose sum is σ = 387627520. Its totient is φ = 55299024.

The previous prime is 166011557. The next prime is 166011623. The reversal of 166011564 is 465110661.

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, 17517 + ... + 25275.

Almost surely, 2^166011564 is an apocalyptic number.

It is an amenable number.

166011564 is an abundant number, since it is smaller than the sum of its proper divisors (221615956).

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

166011564 is a wasteful number, since it uses less digits than its factorization.

166011564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549 (or 9547 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 166011564 is about 12884.5474891437. The cubic root of 166011564 is about 549.5992275965.

The spelling of 166011564 in words is "one hundred sixty-six million, eleven thousand, five hundred sixty-four".