66652211 has 2 divisors, whose sum is σ = 66652212. Its totient is φ = 66652210.

The previous prime is 66652181. The next prime is 66652219. The reversal of 66652211 is 11225666.

66652211 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 66652211 - 2⁶ = 66652147 is a prime.

It is a Chen prime.

It is equal to p_3932480 and since 66652211 and 3932480 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (66652219) 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, 33326105 + 33326106.

It is an arithmetic number, because the mean of its divisors is an integer number (33326106).

Almost surely, 2^66652211 is an apocalyptic number.

66652211 is a deficient number, since it is larger than the sum of its proper divisors (1).

66652211 is an equidigital number, since it uses as much as digits as its factorization.

66652211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 66652211 is about 8164.0805361045. The cubic root of 66652211 is about 405.4508234915.

Adding to 66652211 its reverse (11225666), we get a palindrome (77877877).

The spelling of 66652211 in words is "sixty-six million, six hundred fifty-two thousand, two hundred eleven".