66065963 has 2 divisors, whose sum is σ = 66065964. Its totient is φ = 66065962.

The previous prime is 66065941. The next prime is 66065977. The reversal of 66065963 is 36956066.

66065963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66065963 - 2⁸ = 66065707 is a prime.

It is a super-2 number, since 2×66065963² = 8729422934234738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66065963.

It is not a weakly prime, because it can be changed into another prime (66065903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33032981 + 33032982.

It is an arithmetic number, because the mean of its divisors is an integer number (33032982).

Almost surely, 2^66065963 is an apocalyptic number.

66065963 is a deficient number, since it is larger than the sum of its proper divisors (1).

66065963 is an equidigital number, since it uses as much as digits as its factorization.

66065963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 66065963 is about 8128.0971327858. The cubic root of 66065963 is about 404.2585897173.

The spelling of 66065963 in words is "sixty-six million, sixty-five thousand, nine hundred sixty-three".