686332233686 has 16 divisors (see below), whose sum is σ = 1134667351440. Its totient is φ = 308753018880.

The previous prime is 686332233623. The next prime is 686332233707.

686332233686 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×686332233686² (a number of 24 digits) contains 22 as substring.

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, 160806731 + ... + 160810998.

It is an arithmetic number, because the mean of its divisors is an integer number (70916709465).

Almost surely, 2^686332233686 is an apocalyptic number.

686332233686 is a deficient number, since it is larger than the sum of its proper divisors (448335117754).

686332233686 is a wasteful number, since it uses less digits than its factorization.

686332233686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321617839.

The product of its digits is 26873856, while the sum is 56.

The spelling of 686332233686 in words is "six hundred eighty-six billion, three hundred thirty-two million, two hundred thirty-three thousand, six hundred eighty-six".