6803209 has 6 divisors (see below), whose sum is σ = 7913994. Its totient is φ = 5831280.

The previous prime is 6803207. The next prime is 6803219. The reversal of 6803209 is 9023086.

6803209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4410000 + 2393209 = 2100^2 + 1547^2 .

It is not a de Polignac number, because 6803209 - 2¹ = 6803207 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6803201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69372 + ... + 69469.

It is an arithmetic number, because the mean of its divisors is an integer number (1318999).

Almost surely, 2^6803209 is an apocalyptic number.

It is an amenable number.

6803209 is a deficient number, since it is larger than the sum of its proper divisors (1110785).

6803209 is a wasteful number, since it uses less digits than its factorization.

6803209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138855 (or 138848 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6803209 is about 2608.2961871689. The cubic root of 6803209 is about 189.4834445522.

The spelling of 6803209 in words is "six million, eight hundred three thousand, two hundred nine".