6842809 has 4 divisors (see below), whose sum is σ = 6871680. Its totient is φ = 6813940.

The previous prime is 6842807. The next prime is 6842813. The reversal of 6842809 is 9082486.

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 6842809 - 2¹ = 6842807 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6842807) 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, 14077 + ... + 14554.

It is an arithmetic number, because the mean of its divisors is an integer number (1717920).

Almost surely, 2^6842809 is an apocalyptic number.

It is an amenable number.

6842809 is a deficient number, since it is larger than the sum of its proper divisors (28871).

6842809 is a wasteful number, since it uses less digits than its factorization.

6842809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28870.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 6842809 is about 2615.8763349975. The cubic root of 6842809 is about 189.8503808254.

The spelling of 6842809 in words is "six million, eight hundred forty-two thousand, eight hundred nine".