66065707 has 2 divisors, whose sum is σ = 66065708. Its totient is φ = 66065706.

The previous prime is 66065687. The next prime is 66065711. The reversal of 66065707 is 70756066.

66065707 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 66065707 - 2⁷ = 66065579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66065737) 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, 33032853 + 33032854.

It is an arithmetic number, because the mean of its divisors is an integer number (33032854).

Almost surely, 2^66065707 is an apocalyptic number.

66065707 is a deficient number, since it is larger than the sum of its proper divisors (1).

66065707 is an equidigital number, since it uses as much as digits as its factorization.

66065707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 66065707 is about 8128.0813849272. The cubic root of 66065707 is about 404.2580675608.

The spelling of 66065707 in words is "sixty-six million, sixty-five thousand, seven hundred seven".