685827 has 10 divisors (see below), whose sum is σ = 1024628. Its totient is φ = 457164.

The previous prime is 685819. The next prime is 685849. The reversal of 685827 is 728586.

685827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 685827 - 2³ = 685819 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 685791 and 685800.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685827.

It is not an unprimeable number, because it can be changed into a prime (685427) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4153 + ... + 4314.

2⁶⁸⁵⁸²⁷ is an apocalyptic number.

685827 is a deficient number, since it is larger than the sum of its proper divisors (338801).

685827 is an equidigital number, since it uses as much as digits as its factorization.

685827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479 (or 8470 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 685827 is about 828.1467261301. The cubic root of 685827 is about 88.1870590482.

The spelling of 685827 in words is "six hundred eighty-five thousand, eight hundred twenty-seven".