685935 has 16 divisors (see below), whose sum is σ = 1219680. Its totient is φ = 365760.

The previous prime is 685907. The next prime is 685939. The reversal of 685935 is 539586.

685935 is a `hidden beast` number, since 68 + 593 + 5 = 666.

It is not a de Polignac number, because 685935 - 2⁸ = 685679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 685935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (76230).

2⁶⁸⁵⁹³⁵ is an apocalyptic number.

685935 is a deficient number, since it is larger than the sum of its proper divisors (533745).

685935 is a wasteful number, since it uses less digits than its factorization.

685935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5089 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 685935 is about 828.2119293997. The cubic root of 685935 is about 88.1916878649.

The spelling of 685935 in words is "six hundred eighty-five thousand, nine hundred thirty-five".