166417904 has 10 divisors (see below), whose sum is σ = 322434720. Its totient is φ = 83208944.

The previous prime is 166417877. The next prime is 166417919. The reversal of 166417904 is 409714661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200544 + ... + 5200575.

It is an arithmetic number, because the mean of its divisors is an integer number (32243472).

Almost surely, 2^166417904 is an apocalyptic number.

It is an amenable number.

166417904 is a deficient number, since it is larger than the sum of its proper divisors (156016816).

166417904 is a wasteful number, since it uses less digits than its factorization.

166417904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401127 (or 10401121 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166417904 is about 12900.3063529515. The cubic root of 166417904 is about 550.0472730717.

The spelling of 166417904 in words is "one hundred sixty-six million, four hundred seventeen thousand, nine hundred four".