685832324408 has 256 divisors, whose sum is σ = 1696367370240. Its totient is φ = 252177868800.

The previous prime is 685832324389. The next prime is 685832324423. The reversal of 685832324408 is 804423238586.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 685832324408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175089266 + ... + 175093182.

It is an arithmetic number, because the mean of its divisors is an integer number (6626435040).

Almost surely, 2^685832324408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685832324408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848183685120).

685832324408 is an abundant number, since it is smaller than the sum of its proper divisors (1010535045832).

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

685832324408 is a wasteful number, since it uses less digits than its factorization.

685832324408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 53.

The spelling of 685832324408 in words is "six hundred eighty-five billion, eight hundred thirty-two million, three hundred twenty-four thousand, four hundred eight".