172679868 has 72 divisors (see below), whose sum is σ = 444487680. Its totient is φ = 56518560.

The previous prime is 172679807. The next prime is 172679879. The reversal of 172679868 is 868976271.

172679868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818283 + ... + 818493.

It is an arithmetic number, because the mean of its divisors is an integer number (6173440).

Almost surely, 2^172679868 is an apocalyptic number.

172679868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172679868 is an abundant number, since it is smaller than the sum of its proper divisors (271807812).

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

172679868 is a wasteful number, since it uses less digits than its factorization.

172679868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 522 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 172679868 is about 13140.7712102449. The cubic root of 172679868 is about 556.8615552612.

The spelling of 172679868 in words is "one hundred seventy-two million, six hundred seventy-nine thousand, eight hundred sixty-eight".