686958596868 has 48 divisors (see below), whose sum is σ = 1646828616384. Its totient is φ = 222715704960.

The previous prime is 686958596861. The next prime is 686958596887. The reversal of 686958596868 is 868695859686.

It is a super-2 number, since 2×686958596868² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686958596861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934771 + ... + 1499237.

It is an arithmetic number, because the mean of its divisors is an integer number (34308929508).

Almost surely, 2^686958596868 is an apocalyptic number.

It is an amenable number.

686958596868 is an abundant number, since it is smaller than the sum of its proper divisors (959870019516).

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

686958596868 is a wasteful number, since it uses less digits than its factorization.

686958596868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567252 (or 567250 counting only the distinct ones).

The product of its digits is 10749542400, while the sum is 84.

The spelling of 686958596868 in words is "six hundred eighty-six billion, nine hundred fifty-eight million, five hundred ninety-six thousand, eight hundred sixty-eight".