166920604 has 6 divisors (see below), whose sum is σ = 292111064. Its totient is φ = 83460300.

The previous prime is 166920599. The next prime is 166920613. The reversal of 166920604 is 406029661.

It is a self number, because there is not a number n which added to its sum of digits gives 166920604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20865072 + ... + 20865079.

Almost surely, 2^166920604 is an apocalyptic number.

It is an amenable number.

166920604 is a deficient number, since it is larger than the sum of its proper divisors (125190460).

166920604 is a wasteful number, since it uses less digits than its factorization.

166920604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41730155 (or 41730153 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 166920604 is about 12919.7756946473. The cubic root of 166920604 is about 550.6005605213.

The spelling of 166920604 in words is "one hundred sixty-six million, nine hundred twenty thousand, six hundred four".