166506604 has 12 divisors (see below), whose sum is σ = 317876328. Its totient is φ = 75684800.

The previous prime is 166506589. The next prime is 166506631. The reversal of 166506604 is 406605661.

166506604 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166506604² = 55448898351225632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166506604.

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, 1892077 + ... + 1892164.

It is an arithmetic number, because the mean of its divisors is an integer number (26489694).

Almost surely, 2^166506604 is an apocalyptic number.

It is an amenable number.

166506604 is a deficient number, since it is larger than the sum of its proper divisors (151369724).

166506604 is a wasteful number, since it uses less digits than its factorization.

166506604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784256 (or 3784254 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 166506604 is about 12903.7437978286. The cubic root of 166506604 is about 550.1449799618.

The spelling of 166506604 in words is "one hundred sixty-six million, five hundred six thousand, six hundred four".