166604396 has 24 divisors (see below), whose sum is σ = 337777440. Its totient is φ = 70422912.

The previous prime is 166604393. The next prime is 166604401. The reversal of 166604396 is 693406661.

It is not an unprimeable number, because it can be changed into a prime (166604393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38711 + ... + 42798.

It is an arithmetic number, because the mean of its divisors is an integer number (14074060).

Almost surely, 2^166604396 is an apocalyptic number.

It is an amenable number.

166604396 is an abundant number, since it is smaller than the sum of its proper divisors (171173044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166604396 is a wasteful number, since it uses less digits than its factorization.

166604396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81593 (or 81591 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 166604396 is about 12907.5325294961. The cubic root of 166604396 is about 550.2526618745.

The spelling of 166604396 in words is "one hundred sixty-six million, six hundred four thousand, three hundred ninety-six".