685452 has 18 divisors (see below), whose sum is σ = 1606108. Its totient is φ = 227528.

The previous prime is 685429. The next prime is 685453. The reversal of 685452 is 254586.

685452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (685453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2749 + ... + 2987.

2⁶⁸⁵⁴⁵² is an apocalyptic number.

It is an amenable number.

685452 is an abundant number, since it is smaller than the sum of its proper divisors (920656).

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

685452 is a wasteful number, since it uses less digits than its factorization.

685452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 244 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 685452 is about 827.9202860179. The cubic root of 685452 is about 88.1709829938.

It can be divided in two parts, 6 and 85452, that added together give a palindrome (85458).

The spelling of 685452 in words is "six hundred eighty-five thousand, four hundred fifty-two".