609966089 has 2 divisors, whose sum is σ = 609966090. Its totient is φ = 609966088.

The previous prime is 609966067. The next prime is 609966109. The reversal of 609966089 is 980669906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 576384064 + 33582025 = 24008^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 609966089 - 2⁸ = 609965833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 609966089.

It is not a weakly prime, because it can be changed into another prime (609966589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304983044 + 304983045.

It is an arithmetic number, because the mean of its divisors is an integer number (304983045).

Almost surely, 2^609966089 is an apocalyptic number.

It is an amenable number.

609966089 is a deficient number, since it is larger than the sum of its proper divisors (1).

609966089 is an equidigital number, since it uses as much as digits as its factorization.

609966089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 609966089 is about 24697.4915527873. The cubic root of 609966089 is about 848.0768928918.

The spelling of 609966089 in words is "six hundred nine million, nine hundred sixty-six thousand, eighty-nine".