6659529589 has 2 divisors, whose sum is σ = 6659529590. Its totient is φ = 6659529588.

The previous prime is 6659529551. The next prime is 6659529631. The reversal of 6659529589 is 9859259566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6631333489 + 28196100 = 81433^2 + 5310^2 .

It is a cyclic number.

It is not a de Polignac number, because 6659529589 - 2¹⁵ = 6659496821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6659529589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6659529529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329764794 + 3329764795.

It is an arithmetic number, because the mean of its divisors is an integer number (3329764795).

Almost surely, 2^6659529589 is an apocalyptic number.

It is an amenable number.

6659529589 is a deficient number, since it is larger than the sum of its proper divisors (1).

6659529589 is an equidigital number, since it uses as much as digits as its factorization.

6659529589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488000, while the sum is 64.

The square root of 6659529589 is about 81605.9408928051. The cubic root of 6659529589 is about 1881.4001932250.

The spelling of 6659529589 in words is "six billion, six hundred fifty-nine million, five hundred twenty-nine thousand, five hundred eighty-nine".