6320809 has 4 divisors (see below), whose sum is σ = 6895440. Its totient is φ = 5746180.

The previous prime is 6320803. The next prime is 6320813. The reversal of 6320809 is 9080236.

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 not a de Polignac number, because 6320809 - 2⁵ = 6320777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6320803) 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, 287299 + ... + 287320.

It is an arithmetic number, because the mean of its divisors is an integer number (1723860).

Almost surely, 2^6320809 is an apocalyptic number.

It is an amenable number.

6320809 is a deficient number, since it is larger than the sum of its proper divisors (574631).

6320809 is a wasteful number, since it uses less digits than its factorization.

6320809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574630.

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

The square root of 6320809 is about 2514.1219143073. The cubic root of 6320809 is about 184.8945978606.

The spelling of 6320809 in words is "six million, three hundred twenty thousand, eight hundred nine".