166566368 has 24 divisors (see below), whose sum is σ = 342186768. Its totient is φ = 79661824.

The previous prime is 166566359. The next prime is 166566373. The reversal of 166566368 is 863665661.

166566368 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166566368² = 55488709897422848, which contains 22 as substring.

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, 112421 + ... + 113892.

It is an arithmetic number, because the mean of its divisors is an integer number (14257782).

Almost surely, 2^166566368 is an apocalyptic number.

It is an amenable number.

166566368 is an abundant number, since it is smaller than the sum of its proper divisors (175620400).

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

166566368 is a wasteful number, since it uses less digits than its factorization.

166566368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226346 (or 226338 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 166566368 is about 12906.0593521028. The cubic root of 166566368 is about 550.2107930303.

The spelling of 166566368 in words is "one hundred sixty-six million, five hundred sixty-six thousand, three hundred sixty-eight".