686783704 has 16 divisors (see below), whose sum is σ = 1295165520. Its totient is φ = 341406240.

The previous prime is 686783683. The next prime is 686783717. The reversal of 686783704 is 407387686.

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, 246732 + ... + 249499.

It is an arithmetic number, because the mean of its divisors is an integer number (80947845).

Almost surely, 2^686783704 is an apocalyptic number.

It is an amenable number.

686783704 is a deficient number, since it is larger than the sum of its proper divisors (608381816).

686783704 is a wasteful number, since it uses less digits than its factorization.

686783704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496410 (or 496406 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 686783704 is about 26206.5584157859. The cubic root of 686783704 is about 882.2804592096.

The spelling of 686783704 in words is "six hundred eighty-six million, seven hundred eighty-three thousand, seven hundred four".