686486506068 has 36 divisors (see below), whose sum is σ = 1893038548128. Its totient is φ = 208026213840.

The previous prime is 686486505989. The next prime is 686486506087. The reversal of 686486506068 is 860605684686.

686486506068 is a `hidden beast` number, since 6 + 8 + 64 + 8 + 6 + 506 + 0 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 686486505996 and 686486506014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866775496 + ... + 866776287.

Almost surely, 2^686486506068 is an apocalyptic number.

It is an amenable number.

686486506068 is an abundant number, since it is smaller than the sum of its proper divisors (1206552042060).

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

686486506068 is a wasteful number, since it uses less digits than its factorization.

686486506068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733551804 (or 1733551799 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 686486506068 in words is "six hundred eighty-six billion, four hundred eighty-six million, five hundred six thousand, sixty-eight".