66045211 has 2 divisors, whose sum is σ = 66045212. Its totient is φ = 66045210.

The previous prime is 66045181. The next prime is 66045251. The reversal of 66045211 is 11254066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66045211 is a prime.

It is not a weakly prime, because it can be changed into another prime (66045251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33022605 + 33022606.

It is an arithmetic number, because the mean of its divisors is an integer number (33022606).

Almost surely, 2^66045211 is an apocalyptic number.

66045211 is a deficient number, since it is larger than the sum of its proper divisors (1).

66045211 is an equidigital number, since it uses as much as digits as its factorization.

66045211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 66045211 is about 8126.8204729771. The cubic root of 66045211 is about 404.2162580213.

Adding to 66045211 its reverse (11254066), we get a palindrome (77299277).

The spelling of 66045211 in words is "sixty-six million, forty-five thousand, two hundred eleven".