686685419896 has 32 divisors (see below), whose sum is σ = 1489197306240. Its totient is φ = 290748041568.

The previous prime is 686685419863. The next prime is 686685419909. The reversal of 686685419896 is 698914586686.

It is a congruent number.

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, 73864266 + ... + 73873561.

It is an arithmetic number, because the mean of its divisors is an integer number (46537415820).

Almost surely, 2^686685419896 is an apocalyptic number.

It is an amenable number.

686685419896 is an abundant number, since it is smaller than the sum of its proper divisors (802511886344).

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

686685419896 is a wasteful number, since it uses less digits than its factorization.

686685419896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147737923 (or 147737919 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 76.

The spelling of 686685419896 in words is "six hundred eighty-six billion, six hundred eighty-five million, four hundred nineteen thousand, eight hundred ninety-six".