166604564 has 24 divisors (see below), whose sum is σ = 336329280. Its totient is φ = 70733376.

The previous prime is 166604563. The next prime is 166604609. The reversal of 166604564 is 465406661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166604561) 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, 24809 + ... + 30800.

It is an arithmetic number, because the mean of its divisors is an integer number (14013720).

Almost surely, 2^166604564 is an apocalyptic number.

166604564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166604564 is an abundant number, since it is smaller than the sum of its proper divisors (169724716).

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

166604564 is a wasteful number, since it uses less digits than its factorization.

166604564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55727 (or 55725 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 166604564 is about 12907.5390373223. The cubic root of 166604564 is about 550.2528468285.

The spelling of 166604564 in words is "one hundred sixty-six million, six hundred four thousand, five hundred sixty-four".