172664764 has 12 divisors (see below), whose sum is σ = 303746688. Its totient is φ = 85880000.

The previous prime is 172664719. The next prime is 172664773. The reversal of 172664764 is 467466271.

It is a self number, because there is not a number n which added to its sum of digits gives 172664764.

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, 112237 + ... + 113764.

It is an arithmetic number, because the mean of its divisors is an integer number (25312224).

Almost surely, 2^172664764 is an apocalyptic number.

It is an amenable number.

172664764 is a deficient number, since it is larger than the sum of its proper divisors (131081924).

172664764 is a wasteful number, since it uses less digits than its factorization.

172664764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226196 (or 226194 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 172664764 is about 13140.1964977697. The cubic root of 172664764 is about 556.8453188922.

The spelling of 172664764 in words is "one hundred seventy-two million, six hundred sixty-four thousand, seven hundred sixty-four".