6604543009 has 2 divisors, whose sum is σ = 6604543010. Its totient is φ = 6604543008.

The previous prime is 6604542961. The next prime is 6604543039. The reversal of 6604543009 is 9003454066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6157854784 + 446688225 = 78472^2 + 21135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6604543009 is a prime.

It is not a weakly prime, because it can be changed into another prime (6604543039) 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 as a sum of consecutive naturals, namely, 3302271504 + 3302271505.

It is an arithmetic number, because the mean of its divisors is an integer number (3302271505).

Almost surely, 2^6604543009 is an apocalyptic number.

It is an amenable number.

6604543009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604543009 is an equidigital number, since it uses as much as digits as its factorization.

6604543009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 6604543009 is about 81268.3395240730. The cubic root of 6604543009 is about 1876.2077442232.

The spelling of 6604543009 in words is "six billion, six hundred four million, five hundred forty-three thousand, nine".