685797 has 24 divisors (see below), whose sum is σ = 1119936. Its totient is φ = 365568.

The previous prime is 685793. The next prime is 685819. The reversal of 685797 is 797586.

685797 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 685797 - 2² = 685793 is a prime.

Its product of digits (105840) is a multiple of the sum of its prime divisors (140).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685797.

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 23 ways as a sum of consecutive naturals, for example, 6013 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (46664).

2⁶⁸⁵⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

685797 is a deficient number, since it is larger than the sum of its proper divisors (434139).

685797 is a wasteful number, since it uses less digits than its factorization.

685797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 140 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 685797 is about 828.1286131997. The cubic root of 685797 is about 88.1857731795.

It can be divided in two parts, 68579 and 7, that added together give a palindrome (68586).

The spelling of 685797 in words is "six hundred eighty-five thousand, seven hundred ninety-seven".