685085006900 has 72 divisors (see below), whose sum is σ = 1699491225600. Its totient is φ = 234819872640.

The previous prime is 685085006869. The next prime is 685085006923. The reversal of 685085006900 is 9600580586.

It is a happy number.

It is a super-2 number, since 2×685085006900² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2371526 + ... + 2644674.

It is an arithmetic number, because the mean of its divisors is an integer number (23604044800).

Almost surely, 2^685085006900 is an apocalyptic number.

It is an amenable number.

685085006900 is an abundant number, since it is smaller than the sum of its proper divisors (1014406218700).

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

685085006900 is a wasteful number, since it uses less digits than its factorization.

685085006900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276753 (or 276746 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 685085006900 in words is "six hundred eighty-five billion, eighty-five million, six thousand, nine hundred".