684499704 has 64 divisors (see below), whose sum is σ = 2008588800. Its totient is φ = 190283904.

The previous prime is 684499691. The next prime is 684499721. The reversal of 684499704 is 407994486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48844 + ... + 61275.

It is an arithmetic number, because the mean of its divisors is an integer number (31384200).

Almost surely, 2^684499704 is an apocalyptic number.

It is an amenable number.

684499704 is an abundant number, since it is smaller than the sum of its proper divisors (1324089096).

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

684499704 is a wasteful number, since it uses less digits than its factorization.

684499704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110172 (or 110168 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 684499704 is about 26162.9452470474. The cubic root of 684499704 is about 881.3013219344.

The spelling of 684499704 in words is "six hundred eighty-four million, four hundred ninety-nine thousand, seven hundred four".