686575575686 has 64 divisors (see below), whose sum is σ = 1383209243136. Its totient is φ = 246838924800.

The previous prime is 686575575683. The next prime is 686575575689.

686575575686 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (686575575683) and next prime (686575575689).

It is a super-2 number, since 2×686575575686² (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 (686575575683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6193301 + ... + 6303183.

It is an arithmetic number, because the mean of its divisors is an integer number (21612644424).

Almost surely, 2^686575575686 is an apocalyptic number.

686575575686 is an abundant number, since it is smaller than the sum of its proper divisors (696633667450).

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

686575575686 is a wasteful number, since it uses less digits than its factorization.

686575575686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113037.

The product of its digits is 2540160000, while the sum is 74.

The spelling of 686575575686 in words is "six hundred eighty-six billion, five hundred seventy-five million, five hundred seventy-five thousand, six hundred eighty-six".