6530009 has 4 divisors (see below), whose sum is σ = 6537216. Its totient is φ = 6522804.

The previous prime is 6530003. The next prime is 6530011. The reversal of 6530009 is 9000356.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6530009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6530003) 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 3 ways as a sum of consecutive naturals, for example, 2009 + ... + 4134.

It is an arithmetic number, because the mean of its divisors is an integer number (1634304).

Almost surely, 2^6530009 is an apocalyptic number.

It is an amenable number.

6530009 is a deficient number, since it is larger than the sum of its proper divisors (7207).

6530009 is a wasteful number, since it uses less digits than its factorization.

6530009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 6530009 is about 2555.3882288216. The cubic root of 6530009 is about 186.9123193664.

The spelling of 6530009 in words is "six million, five hundred thirty thousand, nine".