684523132 has 12 divisors (see below), whose sum is σ = 1198110760. Its totient is φ = 342205776.

The previous prime is 684523111. The next prime is 684523159. The reversal of 684523132 is 231325486.

It is a congruent number.

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, 27043 + ... + 45829.

Almost surely, 2^684523132 is an apocalyptic number.

It is an amenable number.

684523132 is a deficient number, since it is larger than the sum of its proper divisors (513587628).

684523132 is a wasteful number, since it uses less digits than its factorization.

684523132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27900 (or 27898 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 684523132 is about 26163.3929756826. The cubic root of 684523132 is about 881.3113764271.

The spelling of 684523132 in words is "six hundred eighty-four million, five hundred twenty-three thousand, one hundred thirty-two".