685792 has 24 divisors (see below), whose sum is σ = 1398600. Its totient is φ = 330624.

The previous prime is 685781. The next prime is 685793. The reversal of 685792 is 297586.

685792 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 (685793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559 + ... + 1297.

It is an arithmetic number, because the mean of its divisors is an integer number (58275).

2⁶⁸⁵⁷⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699300).

685792 is an abundant number, since it is smaller than the sum of its proper divisors (712808).

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

685792 is a wasteful number, since it uses less digits than its factorization.

685792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 770 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 685792 is about 828.1255943394. The cubic root of 685792 is about 88.1855588644.

The spelling of 685792 in words is "six hundred eighty-five thousand, seven hundred ninety-two".