66366211 has 2 divisors, whose sum is σ = 66366212. Its totient is φ = 66366210.

The previous prime is 66366203. The next prime is 66366217. The reversal of 66366211 is 11266366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66366211 - 2³ = 66366203 is a prime.

It is not a weakly prime, because it can be changed into another prime (66366217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33183105 + 33183106.

It is an arithmetic number, because the mean of its divisors is an integer number (33183106).

Almost surely, 2^66366211 is an apocalyptic number.

66366211 is a deficient number, since it is larger than the sum of its proper divisors (1).

66366211 is an equidigital number, since it uses as much as digits as its factorization.

66366211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 66366211 is about 8146.5459551886. The cubic root of 66366211 is about 404.8700716178.

The spelling of 66366211 in words is "sixty-six million, three hundred sixty-six thousand, two hundred eleven".