2268660689 has 2 divisors, whose sum is σ = 2268660690. Its totient is φ = 2268660688.

The previous prime is 2268660673. The next prime is 2268660701. The reversal of 2268660689 is 9860668622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1568793664 + 699867025 = 39608^2 + 26455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2268660689 - 2⁴ = 2268660673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2268660689.

It is not a weakly prime, because it can be changed into another prime (2268660619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134330344 + 1134330345.

It is an arithmetic number, because the mean of its divisors is an integer number (1134330345).

Almost surely, 2^2268660689 is an apocalyptic number.

It is an amenable number.

2268660689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2268660689 is an equidigital number, since it uses as much as digits as its factorization.

2268660689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The square root of 2268660689 is about 47630.4596765557. The cubic root of 2268660689 is about 1313.9833089504.

The spelling of 2268660689 in words is "two billion, two hundred sixty-eight million, six hundred sixty thousand, six hundred eighty-nine".