166412564 has 12 divisors (see below), whose sum is σ = 306549600. Its totient is φ = 78826968.

The previous prime is 166412551. The next prime is 166412581. The reversal of 166412564 is 465214661.

166412564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094744 + ... + 1094895.

It is an arithmetic number, because the mean of its divisors is an integer number (25545800).

Almost surely, 2^166412564 is an apocalyptic number.

It is an amenable number.

166412564 is a deficient number, since it is larger than the sum of its proper divisors (140137036).

166412564 is a wasteful number, since it uses less digits than its factorization.

166412564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189662 (or 2189660 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 166412564 is about 12900.0993794622. The cubic root of 166412564 is about 550.0413897226.

The spelling of 166412564 in words is "one hundred sixty-six million, four hundred twelve thousand, five hundred sixty-four".