6989560709 has 2 divisors, whose sum is σ = 6989560710. Its totient is φ = 6989560708.

The previous prime is 6989560703. The next prime is 6989560733. The reversal of 6989560709 is 9070659896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6150010084 + 839550625 = 78422^2 + 28975^2 .

It is a cyclic number.

It is not a de Polignac number, because 6989560709 - 2⁸ = 6989560453 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 (6989560703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494780354 + 3494780355.

It is an arithmetic number, because the mean of its divisors is an integer number (3494780355).

Almost surely, 2^6989560709 is an apocalyptic number.

It is an amenable number.

6989560709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989560709 is an equidigital number, since it uses as much as digits as its factorization.

6989560709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The square root of 6989560709 is about 83603.5926799800. The cubic root of 6989560709 is about 1911.9797741721.

The spelling of 6989560709 in words is "six billion, nine hundred eighty-nine million, five hundred sixty thousand, seven hundred nine".