66622333 has 2 divisors, whose sum is σ = 66622334. Its totient is φ = 66622332.

The previous prime is 66622319. The next prime is 66622393. The reversal of 66622333 is 33322666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37429924 + 29192409 = 6118^2 + 5403^2 .

It is a cyclic number.

It is not a de Polignac number, because 66622333 - 2⁵ = 66622301 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66622295 and 66622304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66622393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311166 + 33311167.

It is an arithmetic number, because the mean of its divisors is an integer number (33311167).

Almost surely, 2^66622333 is an apocalyptic number.

It is an amenable number.

66622333 is a deficient number, since it is larger than the sum of its proper divisors (1).

66622333 is an equidigital number, since it uses as much as digits as its factorization.

66622333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 31.

The square root of 66622333 is about 8162.2504862323. The cubic root of 66622333 is about 405.3902310016.

Adding to 66622333 its reverse (33322666), we get a palindrome (99944999).

The spelling of 66622333 in words is "sixty-six million, six hundred twenty-two thousand, three hundred thirty-three".