2010665609 has 2 divisors, whose sum is σ = 2010665610. Its totient is φ = 2010665608.

The previous prime is 2010665597. The next prime is 2010665617. The reversal of 2010665609 is 9065660102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797505609 + 213160000 = 42397^2 + 14600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010665609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2010665669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005332804 + 1005332805.

It is an arithmetic number, because the mean of its divisors is an integer number (1005332805).

Almost surely, 2^2010665609 is an apocalyptic number.

It is an amenable number.

2010665609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010665609 is an equidigital number, since it uses as much as digits as its factorization.

2010665609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2010665609 is about 44840.4461284675. The cubic root of 2010665609 is about 1262.1567180131.

The spelling of 2010665609 in words is "two billion, ten million, six hundred sixty-five thousand, six hundred nine".