685885127213 has 36 divisors (see below), whose sum is σ = 827833076928. Its totient is φ = 563318439840.

The previous prime is 685885127189. The next prime is 685885127267. The reversal of 685885127213 is 312721588586.

It is not a de Polignac number, because 685885127213 - 2³⁸ = 411007220269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685885121213) 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 35 ways as a sum of consecutive naturals, for example, 4023020 + ... + 4190042.

It is an arithmetic number, because the mean of its divisors is an integer number (22995363248).

Almost surely, 2^685885127213 is an apocalyptic number.

It is an amenable number.

685885127213 is a deficient number, since it is larger than the sum of its proper divisors (141947949715).

685885127213 is a wasteful number, since it uses less digits than its factorization.

685885127213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167154 (or 167094 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 56.

The spelling of 685885127213 in words is "six hundred eighty-five billion, eight hundred eighty-five million, one hundred twenty-seven thousand, two hundred thirteen".