166624572 has 12 divisors (see below), whose sum is σ = 388790696. Its totient is φ = 55541520.

The previous prime is 166624567. The next prime is 166624589. The reversal of 166624572 is 275426661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 166624572.

It is a congruent number.

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, 6942679 + ... + 6942702.

Almost surely, 2^166624572 is an apocalyptic number.

166624572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166624572 is an abundant number, since it is smaller than the sum of its proper divisors (222166124).

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

166624572 is a wasteful number, since it uses less digits than its factorization.

166624572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885388 (or 13885386 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 166624572 is about 12908.3140649738. The cubic root of 166624572 is about 550.2748730723.

The spelling of 166624572 in words is "one hundred sixty-six million, six hundred twenty-four thousand, five hundred seventy-two".