166790404 has 48 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 72889760.

The previous prime is 166790389. The next prime is 166790461. The reversal of 166790404 is 404097661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121329 + ... + 122695.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^166790404 is an apocalyptic number.

It is an amenable number.

166790404 is a deficient number, since it is larger than the sum of its proper divisors (164156156).

166790404 is a wasteful number, since it uses less digits than its factorization.

166790404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 166790404 is about 12914.7359245166. The cubic root of 166790404 is about 550.4573650168.

The spelling of 166790404 in words is "one hundred sixty-six million, seven hundred ninety thousand, four hundred four".