685860344 has 32 divisors (see below), whose sum is σ = 1400490000. Its totient is φ = 312989952.

The previous prime is 685860323. The next prime is 685860349. The reversal of 685860344 is 443068586.

685860344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×685860344² = 940808822943596672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685860295 and 685860304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685860349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27794 + ... + 46305.

Almost surely, 2^685860344 is an apocalyptic number.

It is an amenable number.

685860344 is an abundant number, since it is smaller than the sum of its proper divisors (714629656).

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

685860344 is a wasteful number, since it uses less digits than its factorization.

685860344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74207 (or 74203 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 685860344 is about 26188.9355262867. The cubic root of 685860344 is about 881.8848820435.

The spelling of 685860344 in words is "six hundred eighty-five million, eight hundred sixty thousand, three hundred forty-four".