685403303859 has 12 divisors (see below), whose sum is σ = 997584454152. Its totient is φ = 453447477600.

The previous prime is 685403303857. The next prime is 685403303867. The reversal of 685403303859 is 958303304586.

It is a happy number.

685403303859 is a `hidden beast` number, since 68 + 540 + 3 + 3 + 0 + 38 + 5 + 9 = 666.

It is not a de Polignac number, because 685403303859 - 2¹ = 685403303857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685403303857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290670282 + ... + 290672639.

It is an arithmetic number, because the mean of its divisors is an integer number (83132037846).

Almost surely, 2^685403303859 is an apocalyptic number.

685403303859 is a deficient number, since it is larger than the sum of its proper divisors (312181150293).

685403303859 is a wasteful number, since it uses less digits than its factorization.

685403303859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581343058 (or 581343055 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 685403303859 in words is "six hundred eighty-five billion, four hundred three million, three hundred three thousand, eight hundred fifty-nine".