6606818789 has 2 divisors, whose sum is σ = 6606818790. Its totient is φ = 6606818788.

The previous prime is 6606818651. The next prime is 6606818819. The reversal of 6606818789 is 9878186066.

6606818789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6104296900 + 502521889 = 78130^2 + 22417^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606818789 - 2¹⁶ = 6606753253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606818389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303409394 + 3303409395.

It is an arithmetic number, because the mean of its divisors is an integer number (3303409395).

Almost surely, 2^6606818789 is an apocalyptic number.

It is an amenable number.

6606818789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606818789 is an equidigital number, since it uses as much as digits as its factorization.

6606818789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 6606818789 is about 81282.3399577054. The cubic root of 6606818789 is about 1876.4232194255.

The spelling of 6606818789 in words is "six billion, six hundred six million, eight hundred eighteen thousand, seven hundred eighty-nine".