685508088396 has 48 divisors (see below), whose sum is σ = 1615502740320. Its totient is φ = 226219699200.

The previous prime is 685508088373. The next prime is 685508088403. The reversal of 685508088396 is 693880805586.

It is an unprimeable number.

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, 19239670 + ... + 19275266.

It is an arithmetic number, because the mean of its divisors is an integer number (33656307090).

Almost surely, 2^685508088396 is an apocalyptic number.

It is an amenable number.

685508088396 is an abundant number, since it is smaller than the sum of its proper divisors (929994651924).

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

685508088396 is a wasteful number, since it uses less digits than its factorization.

685508088396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51594 (or 51592 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 66.

The spelling of 685508088396 in words is "six hundred eighty-five billion, five hundred eight million, eighty-eight thousand, three hundred ninety-six".