172663404 has 24 divisors (see below), whose sum is σ = 412251840. Its totient is φ = 56215824.

The previous prime is 172663391. The next prime is 172663411. The reversal of 172663404 is 404366271.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166794 + ... + 167825.

It is an arithmetic number, because the mean of its divisors is an integer number (17177160).

Almost surely, 2^172663404 is an apocalyptic number.

It is an amenable number.

172663404 is an abundant number, since it is smaller than the sum of its proper divisors (239588436).

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

172663404 is a wasteful number, since it uses less digits than its factorization.

172663404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334669 (or 334667 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 172663404 is about 13140.1447480612. The cubic root of 172663404 is about 556.8438568845.

The spelling of 172663404 in words is "one hundred seventy-two million, six hundred sixty-three thousand, four hundred four".