685307704 has 8 divisors (see below), whose sum is σ = 1284951960. Its totient is φ = 342653848.

The previous prime is 685307687. The next prime is 685307717. The reversal of 685307704 is 407703586.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42831724 + ... + 42831739.

It is an arithmetic number, because the mean of its divisors is an integer number (160618995).

Almost surely, 2^685307704 is an apocalyptic number.

It is an amenable number.

685307704 is a deficient number, since it is larger than the sum of its proper divisors (599644256).

685307704 is a wasteful number, since it uses less digits than its factorization.

685307704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85663469 (or 85663465 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 685307704 is about 26178.3823793603. The cubic root of 685307704 is about 881.6479553746.

The spelling of 685307704 in words is "six hundred eighty-five million, three hundred seven thousand, seven hundred four".