6912564709 has 2 divisors, whose sum is σ = 6912564710. Its totient is φ = 6912564708.

The previous prime is 6912564689. The next prime is 6912564721. The reversal of 6912564709 is 9074652196.

It is a happy number.

6912564709 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., 5173924900 + 1738639809 = 71930^2 + 41697^2 .

It is a cyclic number.

It is not a de Polignac number, because 6912564709 - 2⁵ = 6912564677 is a prime.

It is a super-2 number, since 2×6912564709² = 95567101712224509362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6912574709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456282354 + 3456282355.

It is an arithmetic number, because the mean of its divisors is an integer number (3456282355).

Almost surely, 2^6912564709 is an apocalyptic number.

It is an amenable number.

6912564709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6912564709 is an equidigital number, since it uses as much as digits as its factorization.

6912564709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 6912564709 is about 83141.8348907456. The cubic root of 6912564709 is about 1904.9331370869.

The spelling of 6912564709 in words is "six billion, nine hundred twelve million, five hundred sixty-four thousand, seven hundred nine".