685515057704 has 32 divisors (see below), whose sum is σ = 1322604023520. Its totient is φ = 332856081216.

The previous prime is 685515057653. The next prime is 685515057757. The reversal of 685515057704 is 407750515586.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059274 + ... + 2368889.

It is an arithmetic number, because the mean of its divisors is an integer number (41331375735).

Almost surely, 2^685515057704 is an apocalyptic number.

It is an amenable number.

685515057704 is a deficient number, since it is larger than the sum of its proper divisors (637088965816).

685515057704 is a wasteful number, since it uses less digits than its factorization.

685515057704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428729 (or 4428725 counting only the distinct ones).

The product of its (nonzero) digits is 5880000, while the sum is 53.

The spelling of 685515057704 in words is "six hundred eighty-five billion, five hundred fifteen million, fifty-seven thousand, seven hundred four".