685338 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 214976.

The previous prime is 685337. The next prime is 685339. The reversal of 685338 is 833586.

685338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685337) and next prime (685339).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 685299 and 685308.

It is not an unprimeable number, because it can be changed into a prime (685337) 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, 3258 + ... + 3461.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁶⁸⁵³³⁸ is an apocalyptic number.

685338 is an abundant number, since it is smaller than the sum of its proper divisors (766182).

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

685338 is a wasteful number, since it uses less digits than its factorization.

685338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741.

The product of its digits is 17280, while the sum is 33.

The square root of 685338 is about 827.8514359473. The cubic root of 685338 is about 88.1660947112.

The spelling of 685338 in words is "six hundred eighty-five thousand, three hundred thirty-eight".