6689364589 has 2 divisors, whose sum is σ = 6689364590. Its totient is φ = 6689364588.

The previous prime is 6689364587. The next prime is 6689364601. The reversal of 6689364589 is 9854639866.

6689364589 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6098048100 + 591316489 = 78090^2 + 24317^2 .

It is a cyclic number.

It is not a de Polignac number, because 6689364589 - 2¹ = 6689364587 is a prime.

Together with 6689364587, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6689364589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6689364581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344682294 + 3344682295.

It is an arithmetic number, because the mean of its divisors is an integer number (3344682295).

Almost surely, 2^6689364589 is an apocalyptic number.

It is an amenable number.

6689364589 is a deficient number, since it is larger than the sum of its proper divisors (1).

6689364589 is an equidigital number, since it uses as much as digits as its factorization.

6689364589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67184640, while the sum is 64.

The square root of 6689364589 is about 81788.5358042311. The cubic root of 6689364589 is about 1884.2055945180.

The spelling of 6689364589 in words is "six billion, six hundred eighty-nine million, three hundred sixty-four thousand, five hundred eighty-nine".