66066073 has 2 divisors, whose sum is σ = 66066074. Its totient is φ = 66066072.

The previous prime is 66066043. The next prime is 66066079. The reversal of 66066073 is 37066066.

66066073 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 can be written as a sum of positive squares in only one way, i.e., 65983129 + 82944 = 8123^2 + 288^2 .

It is a cyclic number.

It is not a de Polignac number, because 66066073 - 2¹³ = 66057881 is a prime.

It is not a weakly prime, because it can be changed into another prime (66066079) 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, 33033036 + 33033037.

It is an arithmetic number, because the mean of its divisors is an integer number (33033037).

Almost surely, 2^66066073 is an apocalyptic number.

It is an amenable number.

66066073 is a deficient number, since it is larger than the sum of its proper divisors (1).

66066073 is an equidigital number, since it uses as much as digits as its factorization.

66066073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 66066073 is about 8128.1038994344. The cubic root of 66066073 is about 404.2588140811.

The spelling of 66066073 in words is "sixty-six million, sixty-six thousand, seventy-three".