172932664 has 8 divisors (see below), whose sum is σ = 324248760. Its totient is φ = 86466328.

The previous prime is 172932647. The next prime is 172932671. The reversal of 172932664 is 466239271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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, 10808284 + ... + 10808299.

It is an arithmetic number, because the mean of its divisors is an integer number (40531095).

Almost surely, 2^172932664 is an apocalyptic number.

It is an amenable number.

172932664 is a deficient number, since it is larger than the sum of its proper divisors (151316096).

172932664 is a wasteful number, since it uses less digits than its factorization.

172932664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21616589 (or 21616585 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 172932664 is about 13150.3864581996. The cubic root of 172932664 is about 557.1331633265.

The spelling of 172932664 in words is "one hundred seventy-two million, nine hundred thirty-two thousand, six hundred sixty-four".