6606344909 has 2 divisors, whose sum is σ = 6606344910. Its totient is φ = 6606344908.

The previous prime is 6606344893. The next prime is 6606344917. The reversal of 6606344909 is 9094436066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3975680809 + 2630664100 = 63053^2 + 51290^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606344909 - 2⁴ = 6606344893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606344509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303172454 + 3303172455.

It is an arithmetic number, because the mean of its divisors is an integer number (3303172455).

Almost surely, 2^6606344909 is an apocalyptic number.

It is an amenable number.

6606344909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606344909 is an equidigital number, since it uses as much as digits as its factorization.

6606344909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 47.

The square root of 6606344909 is about 81279.4248810854. The cubic root of 6606344909 is about 1876.3783556404.

The spelling of 6606344909 in words is "six billion, six hundred six million, three hundred forty-four thousand, nine hundred nine".