686364463686 has 32 divisors (see below), whose sum is σ = 1497551924736. Its totient is φ = 207985140000.

The previous prime is 686364463667. The next prime is 686364463699.

686364463686 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6172056 + ... + 6282276.

It is an arithmetic number, because the mean of its divisors is an integer number (46798497648).

Almost surely, 2^686364463686 is an apocalyptic number.

686364463686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

686364463686 is an abundant number, since it is smaller than the sum of its proper divisors (811187461050).

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

686364463686 is a wasteful number, since it uses less digits than its factorization.

686364463686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204588.

The product of its digits is 429981696, while the sum is 66.

The spelling of 686364463686 in words is "six hundred eighty-six billion, three hundred sixty-four million, four hundred sixty-three thousand, six hundred eighty-six".