66000223 has 2 divisors, whose sum is σ = 66000224. Its totient is φ = 66000222.

The previous prime is 66000217. The next prime is 66000229. The reversal of 66000223 is 32200066.

It is a balanced prime because it is at equal distance from previous prime (66000217) and next prime (66000229).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66000223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66000223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66000229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000111 + 33000112.

It is an arithmetic number, because the mean of its divisors is an integer number (33000112).

Almost surely, 2^66000223 is an apocalyptic number.

66000223 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000223 is an equidigital number, since it uses as much as digits as its factorization.

66000223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 66000223 is about 8124.0521293256. The cubic root of 66000223 is about 404.1244572115.

Adding to 66000223 its reverse (32200066), we get a palindrome (98200289).

The spelling of 66000223 in words is "sixty-six million, two hundred twenty-three", and thus it is an aban number.