6605823989 has 2 divisors, whose sum is σ = 6605823990. Its totient is φ = 6605823988.

The previous prime is 6605823979. The next prime is 6605824013. The reversal of 6605823989 is 9893285066.

6605823989 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., 3385261489 + 3220562500 = 58183^2 + 56750^2 .

It is a cyclic number.

It is not a de Polignac number, because 6605823989 - 2³² = 2310856693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6605823919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302911994 + 3302911995.

It is an arithmetic number, because the mean of its divisors is an integer number (3302911995).

Almost surely, 2^6605823989 is an apocalyptic number.

It is an amenable number.

6605823989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6605823989 is an equidigital number, since it uses as much as digits as its factorization.

6605823989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The square root of 6605823989 is about 81276.2203168922. The cubic root of 6605823989 is about 1876.3290359476.

The spelling of 6605823989 in words is "six billion, six hundred five million, eight hundred twenty-three thousand, nine hundred eighty-nine".