685223180 has 12 divisors (see below), whose sum is σ = 1438968720. Its totient is φ = 274089264.

The previous prime is 685223179. The next prime is 685223213. The reversal of 685223180 is 81322586.

685223180 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 685223180.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17130560 + ... + 17130599.

It is an arithmetic number, because the mean of its divisors is an integer number (119914060).

Almost surely, 2^685223180 is an apocalyptic number.

It is an amenable number.

685223180 is an abundant number, since it is smaller than the sum of its proper divisors (753745540).

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

685223180 is a wasteful number, since it uses less digits than its factorization.

685223180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34261168 (or 34261166 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 685223180 is about 26176.7679441141. The cubic root of 685223180 is about 881.6117071923.

The spelling of 685223180 in words is "six hundred eighty-five million, two hundred twenty-three thousand, one hundred eighty".