685993110 has 64 divisors (see below), whose sum is σ = 1854019584. Its totient is φ = 160934400.

The previous prime is 685993073. The next prime is 685993123. The reversal of 685993110 is 11399586.

685993110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23299 + ... + 43758.

It is an arithmetic number, because the mean of its divisors is an integer number (28969056).

Almost surely, 2^685993110 is an apocalyptic number.

685993110 is an abundant number, since it is smaller than the sum of its proper divisors (1168026474).

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

685993110 is a wasteful number, since it uses less digits than its factorization.

685993110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67109.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 685993110 is about 26191.4701763761. The cubic root of 685993110 is about 881.9417822444.

The spelling of 685993110 in words is "six hundred eighty-five million, nine hundred ninety-three thousand, one hundred ten".