686984063976 has 96 divisors (see below), whose sum is σ = 2134284422400. Its totient is φ = 195551452800.

The previous prime is 686984063881. The next prime is 686984063999. The reversal of 686984063976 is 679360489686.

686984063976 is a `hidden beast` number, since 68 + 6 + 98 + 406 + 3 + 9 + 76 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2398000 + ... + 2669151.

It is an arithmetic number, because the mean of its divisors is an integer number (22232129400).

Almost surely, 2^686984063976 is an apocalyptic number.

It is an amenable number.

686984063976 is an abundant number, since it is smaller than the sum of its proper divisors (1447300358424).

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

686984063976 is a wasteful number, since it uses less digits than its factorization.

686984063976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067439 (or 5067432 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 686984063976 in words is "six hundred eighty-six billion, nine hundred eighty-four million, sixty-three thousand, nine hundred seventy-six".