686367763686 has 48 divisors (see below), whose sum is σ = 1692859633920. Its totient is φ = 198947176560.

The previous prime is 686367763681. The next prime is 686367763699.

686367763686 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×686367763686² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686367763681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75354226 + ... + 75363333.

It is an arithmetic number, because the mean of its divisors is an integer number (35267909040).

Almost surely, 2^686367763686 is an apocalyptic number.

686367763686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

686367763686 is an abundant number, since it is smaller than the sum of its proper divisors (1006491870234).

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

686367763686 is a wasteful number, since it uses less digits than its factorization.

686367763686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150717601 (or 150717598 counting only the distinct ones).

The product of its digits is 1316818944, while the sum is 72.

The spelling of 686367763686 in words is "six hundred eighty-six billion, three hundred sixty-seven million, seven hundred sixty-three thousand, six hundred eighty-six".