685081230636 has 24 divisors (see below), whose sum is σ = 1743843132864. Its totient is φ = 207600372880.

The previous prime is 685081230599. The next prime is 685081230643. The reversal of 685081230636 is 636032180586.

685081230636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2595004530 + ... + 2595004793.

It is an arithmetic number, because the mean of its divisors is an integer number (72660130536).

Almost surely, 2^685081230636 is an apocalyptic number.

685081230636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

685081230636 is an abundant number, since it is smaller than the sum of its proper divisors (1058761902228).

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

685081230636 is a wasteful number, since it uses less digits than its factorization.

685081230636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190009341 (or 5190009339 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 685081230636 in words is "six hundred eighty-five billion, eighty-one million, two hundred thirty thousand, six hundred thirty-six".