685888917168 has 320 divisors, whose sum is σ = 2217458073600. Its totient is φ = 177869952000.

The previous prime is 685888917073. The next prime is 685888917173. The reversal of 685888917168 is 861719888586.

685888917168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 685888917168.

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, 86609113 + ... + 86617031.

It is an arithmetic number, because the mean of its divisors is an integer number (6929556480).

Almost surely, 2^685888917168 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 685888917168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108729036800).

685888917168 is an abundant number, since it is smaller than the sum of its proper divisors (1531569156432).

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

685888917168 is a wasteful number, since it uses less digits than its factorization.

685888917168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280 (or 8274 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 75.

The spelling of 685888917168 in words is "six hundred eighty-five billion, eight hundred eighty-eight million, nine hundred seventeen thousand, one hundred sixty-eight".