682809 has 4 divisors (see below), whose sum is σ = 910416. Its totient is φ = 455204.

The previous prime is 682789. The next prime is 682811. The reversal of 682809 is 908286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 682809 - 2⁵ = 682777 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 682809.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 682809.

It is not an unprimeable number, because it can be changed into a prime (682819) by changing a digit.

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, 113799 + ... + 113804.

It is an arithmetic number, because the mean of its divisors is an integer number (227604).

2⁶⁸²⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

682809 is a deficient number, since it is larger than the sum of its proper divisors (227607).

682809 is a wasteful number, since it uses less digits than its factorization.

682809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227606.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 682809 is about 826.3225762376. The cubic root of 682809 is about 88.0575123358.

The spelling of 682809 in words is "six hundred eighty-two thousand, eight hundred nine".