685340 has 12 divisors (see below), whose sum is σ = 1439256. Its totient is φ = 274128.

The previous prime is 685339. The next prime is 685361. The reversal of 685340 is 43586.

685340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 17114 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (119938).

2⁶⁸⁵³⁴⁰ is an apocalyptic number.

It is an amenable number.

685340 is an abundant number, since it is smaller than the sum of its proper divisors (753916).

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

685340 is a wasteful number, since it uses less digits than its factorization.

685340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34276 (or 34274 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 685340 is about 827.8526438926. The cubic root of 685340 is about 88.1661804752.

The spelling of 685340 in words is "six hundred eighty-five thousand, three hundred forty".