659378089 has 2 divisors, whose sum is σ = 659378090. Its totient is φ = 659378088.

The previous prime is 659378081. The next prime is 659378119. The reversal of 659378089 is 980873956.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393427225 + 265950864 = 19835^2 + 16308^2 .

It is a cyclic number.

It is not a de Polignac number, because 659378089 - 2³ = 659378081 is a prime.

It is not a weakly prime, because it can be changed into another prime (659378081) 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, 329689044 + 329689045.

It is an arithmetic number, because the mean of its divisors is an integer number (329689045).

Almost surely, 2^659378089 is an apocalyptic number.

It is an amenable number.

659378089 is a deficient number, since it is larger than the sum of its proper divisors (1).

659378089 is an equidigital number, since it uses as much as digits as its factorization.

659378089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 659378089 is about 25678.3583782141. The cubic root of 659378089 is about 870.3852123348.

The spelling of 659378089 in words is "six hundred fifty-nine million, three hundred seventy-eight thousand, eighty-nine".