6609532409 has 2 divisors, whose sum is σ = 6609532410. Its totient is φ = 6609532408.

The previous prime is 6609532343. The next prime is 6609532429. The reversal of 6609532409 is 9042359066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6390403600 + 219128809 = 79940^2 + 14803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6609532409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6609532409.

It is not a weakly prime, because it can be changed into another prime (6609532429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304766204 + 3304766205.

It is an arithmetic number, because the mean of its divisors is an integer number (3304766205).

Almost surely, 2^6609532409 is an apocalyptic number.

It is an amenable number.

6609532409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609532409 is an equidigital number, since it uses as much as digits as its factorization.

6609532409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 6609532409 is about 81299.0307998810. The cubic root of 6609532409 is about 1876.6800854890.

The spelling of 6609532409 in words is "six billion, six hundred nine million, five hundred thirty-two thousand, four hundred nine".