66002089 has 2 divisors, whose sum is σ = 66002090. Its totient is φ = 66002088.

The previous prime is 66002081. The next prime is 66002093. The reversal of 66002089 is 98020066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53042089 + 12960000 = 7283^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 66002089 - 2³ = 66002081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66002089.

It is not a weakly prime, because it can be changed into another prime (66002081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33001044 + 33001045.

It is an arithmetic number, because the mean of its divisors is an integer number (33001045).

Almost surely, 2^66002089 is an apocalyptic number.

It is an amenable number.

66002089 is a deficient number, since it is larger than the sum of its proper divisors (1).

66002089 is an equidigital number, since it uses as much as digits as its factorization.

66002089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 66002089 is about 8124.1669726810. The cubic root of 66002089 is about 404.1282657296.

The spelling of 66002089 in words is "sixty-six million, two thousand, eighty-nine".