565665011 has 2 divisors, whose sum is σ = 565665012. Its totient is φ = 565665010.

The previous prime is 565664993. The next prime is 565665071. The reversal of 565665011 is 110566565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565665011 - 2¹⁸ = 565402867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (565665071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282832505 + 282832506.

It is an arithmetic number, because the mean of its divisors is an integer number (282832506).

Almost surely, 2^565665011 is an apocalyptic number.

565665011 is a deficient number, since it is larger than the sum of its proper divisors (1).

565665011 is an equidigital number, since it uses as much as digits as its factorization.

565665011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 565665011 is about 23783.7131457643. The cubic root of 565665011 is about 827.0271598221.

The spelling of 565665011 in words is "five hundred sixty-five million, six hundred sixty-five thousand, eleven".