686342957688 has 48 divisors (see below), whose sum is σ = 1927691645880. Its totient is φ = 228780985248.

The previous prime is 686342957623. The next prime is 686342957693. The reversal of 686342957688 is 886759243686.

686342957688 is a `hidden beast` number, since 6 + 8 + 6 + 3 + 42 + 9 + 576 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176526595 + ... + 176530482.

Almost surely, 2^686342957688 is an apocalyptic number.

It is an amenable number.

686342957688 is an abundant number, since it is smaller than the sum of its proper divisors (1241348688192).

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

686342957688 is a wasteful number, since it uses less digits than its factorization.

686342957688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353057098 (or 353057082 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 72.

The spelling of 686342957688 in words is "six hundred eighty-six billion, three hundred forty-two million, nine hundred fifty-seven thousand, six hundred eighty-eight".