685403303860 has 48 divisors (see below), whose sum is σ = 1592312141952. Its totient is φ = 245727171200.

The previous prime is 685403303857. The next prime is 685403303867. The reversal of 685403303860 is 68303304586.

It is a self number, because there is not a number n which added to its sum of digits gives 685403303860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685403303867) 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 15 ways as a sum of consecutive naturals, for example, 21924307 + ... + 21955546.

It is an arithmetic number, because the mean of its divisors is an integer number (33173169624).

Almost surely, 2^685403303860 is an apocalyptic number.

It is an amenable number.

685403303860 is an abundant number, since it is smaller than the sum of its proper divisors (906908838092).

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

685403303860 is a wasteful number, since it uses less digits than its factorization.

685403303860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43879944 (or 43879942 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 685403303860 in words is "six hundred eighty-five billion, four hundred three million, three hundred three thousand, eight hundred sixty".