166580404 has 12 divisors (see below), whose sum is σ = 292176864. Its totient is φ = 83101304.

The previous prime is 166580389. The next prime is 166580441. The reversal of 166580404 is 404085661.

It is a self number, because there is not a number n which added to its sum of digits gives 166580404.

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, 45232 + ... + 48775.

It is an arithmetic number, because the mean of its divisors is an integer number (24348072).

Almost surely, 2^166580404 is an apocalyptic number.

It is an amenable number.

166580404 is a deficient number, since it is larger than the sum of its proper divisors (125596460).

166580404 is a wasteful number, since it uses less digits than its factorization.

166580404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94454 (or 94452 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 166580404 is about 12906.6031162347. The cubic root of 166580404 is about 550.2262474142.

The spelling of 166580404 in words is "one hundred sixty-six million, five hundred eighty thousand, four hundred four".