685432 has 16 divisors (see below), whose sum is σ = 1402200. Its totient is φ = 311520.

The previous prime is 685429. The next prime is 685453. The reversal of 685432 is 234586.

It is a self number, because there is not a number n which added to its sum of digits gives 685432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3807 + ... + 3982.

2⁶⁸⁵⁴³² is an apocalyptic number.

It is an amenable number.

685432 is an abundant number, since it is smaller than the sum of its proper divisors (716768).

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

685432 is a wasteful number, since it uses less digits than its factorization.

685432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7806 (or 7802 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 685432 is about 827.9082074723. The cubic root of 685432 is about 88.1701254396.

It can be divided in two parts, 6854 and 32, that added together give a palindrome (6886).

The spelling of 685432 in words is "six hundred eighty-five thousand, four hundred thirty-two".