684495936 has 42 divisors (see below), whose sum is σ = 1961985662. Its totient is φ = 228165120.

The previous prime is 684495913. The next prime is 684495941. The reversal of 684495936 is 639594486.

684495936 is a `hidden beast` number, since 6 + 8 + 4 + 49 + 593 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 422055936 + 262440000 = 20544^2 + 16200^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593605 + ... + 594756.

Almost surely, 2^684495936 is an apocalyptic number.

It is an amenable number.

684495936 is an abundant number, since it is smaller than the sum of its proper divisors (1277489726).

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

684495936 is a wasteful number, since it uses less digits than its factorization.

684495936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188379 (or 1188366 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 684495936 is about 26162.8732367070. The cubic root of 684495936 is about 881.2997048168.

The spelling of 684495936 in words is "six hundred eighty-four million, four hundred ninety-five thousand, nine hundred thirty-six".