685563693560 has 16 divisors (see below), whose sum is σ = 1542518310600. Its totient is φ = 274225477408.

The previous prime is 685563693509. The next prime is 685563693593. The reversal of 685563693560 is 65396365586.

It is a junction number, because it is equal to n+sod(n) for n = 685563693493 and 685563693502.

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, 8569546130 + ... + 8569546209.

Almost surely, 2^685563693560 is an apocalyptic number.

It is an amenable number.

685563693560 is an abundant number, since it is smaller than the sum of its proper divisors (856954617040).

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

685563693560 is a wasteful number, since it uses less digits than its factorization.

685563693560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17139092350 (or 17139092346 counting only the distinct ones).

The product of its (nonzero) digits is 104976000, while the sum is 62.

The spelling of 685563693560 in words is "six hundred eighty-five billion, five hundred sixty-three million, six hundred ninety-three thousand, five hundred sixty".