66226529 has 2 divisors, whose sum is σ = 66226530. Its totient is φ = 66226528.

The previous prime is 66226487. The next prime is 66226553. The reversal of 66226529 is 92562266.

It is a happy number.

66226529 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 can be written as a sum of positive squares in only one way, i.e., 50410000 + 15816529 = 7100^2 + 3977^2 .

It is a cyclic number.

It is not a de Polignac number, because 66226529 - 2¹² = 66222433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66226492 and 66226501.

It is not a weakly prime, because it can be changed into another prime (66226129) 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, 33113264 + 33113265.

It is an arithmetic number, because the mean of its divisors is an integer number (33113265).

Almost surely, 2^66226529 is an apocalyptic number.

It is an amenable number.

66226529 is a deficient number, since it is larger than the sum of its proper divisors (1).

66226529 is an equidigital number, since it uses as much as digits as its factorization.

66226529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 66226529 is about 8137.9683582575. The cubic root of 66226529 is about 404.5858266534.

The spelling of 66226529 in words is "sixty-six million, two hundred twenty-six thousand, five hundred twenty-nine".