66363611 has 2 divisors, whose sum is σ = 66363612. Its totient is φ = 66363610.

The previous prime is 66363601. The next prime is 66363623. The reversal of 66363611 is 11636366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66363611 - 2¹⁴ = 66347227 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66363601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33181805 + 33181806.

It is an arithmetic number, because the mean of its divisors is an integer number (33181806).

Almost surely, 2^66363611 is an apocalyptic number.

66363611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66363611 is an equidigital number, since it uses as much as digits as its factorization.

66363611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The square root of 66363611 is about 8146.3863767931. The cubic root of 66363611 is about 404.8647844095.

Adding to 66363611 its reverse (11636366), we get a palindrome (77999977).

The spelling of 66363611 in words is "sixty-six million, three hundred sixty-three thousand, six hundred eleven".