686488884686 has 16 divisors (see below), whose sum is σ = 1129621127040. Its totient is φ = 310297157880.

The previous prime is 686488884659. The next prime is 686488884707.

686488884686 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 686488884686.

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, 87158186 + ... + 87166061.

It is an arithmetic number, because the mean of its divisors is an integer number (70601320440).

Almost surely, 2^686488884686 is an apocalyptic number.

686488884686 is a deficient number, since it is larger than the sum of its proper divisors (443132242354).

686488884686 is a wasteful number, since it uses less digits than its factorization.

686488884686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174324439.

The product of its digits is 5435817984, while the sum is 80.

The spelling of 686488884686 in words is "six hundred eighty-six billion, four hundred eighty-eight million, eight hundred eighty-four thousand, six hundred eighty-six".