66223103 has 2 divisors, whose sum is σ = 66223104. Its totient is φ = 66223102.

The previous prime is 66223097. The next prime is 66223121. The reversal of 66223103 is 30132266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66223103 - 2⁶ = 66223039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66223123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33111551 + 33111552.

It is an arithmetic number, because the mean of its divisors is an integer number (33111552).

Almost surely, 2^66223103 is an apocalyptic number.

66223103 is a deficient number, since it is larger than the sum of its proper divisors (1).

66223103 is an equidigital number, since it uses as much as digits as its factorization.

66223103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 66223103 is about 8137.7578607378. The cubic root of 66223103 is about 404.5788499178.

Adding to 66223103 its reverse (30132266), we get a palindrome (96355369).

The spelling of 66223103 in words is "sixty-six million, two hundred twenty-three thousand, one hundred three".