686535322256 has 60 divisors (see below), whose sum is σ = 1552372235568. Its totient is φ = 293270918976.

The previous prime is 686535322241. The next prime is 686535322259. The reversal of 686535322256 is 652223535686.

686535322256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 686535322198 and 686535322207.

It is not an unprimeable number, because it can be changed into a prime (686535322259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1185506 + ... + 1666881.

Almost surely, 2^686535322256 is an apocalyptic number.

It is an amenable number.

686535322256 is an abundant number, since it is smaller than the sum of its proper divisors (865836913312).

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

686535322256 is a wasteful number, since it uses less digits than its factorization.

686535322256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852716 (or 2852703 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 53.

The spelling of 686535322256 in words is "six hundred eighty-six billion, five hundred thirty-five million, three hundred twenty-two thousand, two hundred fifty-six".