6600009 has 16 divisors (see below), whose sum is σ = 9531200. Its totient is φ = 4038336.

The previous prime is 6600001. The next prime is 6600031. The reversal of 6600009 is 9000066.

It is not a de Polignac number, because 6600009 - 2³ = 6600001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6600001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8562 + ... + 9300.

It is an arithmetic number, because the mean of its divisors is an integer number (595700).

Almost surely, 2^6600009 is an apocalyptic number.

It is an amenable number.

6600009 is a deficient number, since it is larger than the sum of its proper divisors (2931191).

6600009 is a wasteful number, since it uses less digits than its factorization.

6600009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 6600009 is about 2569.0482673551. The cubic root of 6600009 is about 187.5778307993.

The spelling of 6600009 in words is "six million, six hundred thousand, nine".