683809 has 4 divisors (see below), whose sum is σ = 781504. Its totient is φ = 586116.

The previous prime is 683807. The next prime is 683819. The reversal of 683809 is 908386.

683809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 683809 - 2¹ = 683807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683807) 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, 48837 + ... + 48850.

It is an arithmetic number, because the mean of its divisors is an integer number (195376).

2⁶⁸³⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

683809 is a deficient number, since it is larger than the sum of its proper divisors (97695).

683809 is an equidigital number, since it uses as much as digits as its factorization.

683809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97694.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 683809 is about 826.9274454267. The cubic root of 683809 is about 88.1004792365.

The spelling of 683809 in words is "six hundred eighty-three thousand, eight hundred nine".