685236 has 24 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 214912.

The previous prime is 685231. The next prime is 685247. The reversal of 685236 is 632586.

685236 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 not an unprimeable number, because it can be changed into a prime (685231) by changing a digit.

685236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2⁶⁸⁵²³⁶ is an apocalyptic number.

It is an amenable number.

685236 is an abundant number, since it is smaller than the sum of its proper divisors (1008204).

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

685236 is a wasteful number, since it uses less digits than its factorization.

685236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383 (or 3381 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 685236 is about 827.7898283985. The cubic root of 685236 is about 88.1617205251.

Subtracting from 685236 its reverse (632586), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 685236 in words is "six hundred eighty-five thousand, two hundred thirty-six".