684936172 has 12 divisors (see below), whose sum is σ = 1221254496. Its totient is φ = 336006320.

The previous prime is 684936167. The next prime is 684936209. The reversal of 684936172 is 271639486.

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, 1615204 + ... + 1615627.

It is an arithmetic number, because the mean of its divisors is an integer number (101771208).

Almost surely, 2^684936172 is an apocalyptic number.

It is an amenable number.

684936172 is a deficient number, since it is larger than the sum of its proper divisors (536318324).

684936172 is a wasteful number, since it uses less digits than its factorization.

684936172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230888 (or 3230886 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 684936172 is about 26171.2852569376. The cubic root of 684936172 is about 881.4886013411.

The spelling of 684936172 in words is "six hundred eighty-four million, nine hundred thirty-six thousand, one hundred seventy-two".