66446123 has 2 divisors, whose sum is σ = 66446124. Its totient is φ = 66446122.

The previous prime is 66446099. The next prime is 66446129. The reversal of 66446123 is 32164466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66446123 - 2⁸ = 66445867 is a prime.

It is a super-2 number, since 2×66446123² = 8830174523462258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66446123.

It is not a weakly prime, because it can be changed into another prime (66446129) 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, 33223061 + 33223062.

It is an arithmetic number, because the mean of its divisors is an integer number (33223062).

Almost surely, 2^66446123 is an apocalyptic number.

66446123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66446123 is an equidigital number, since it uses as much as digits as its factorization.

66446123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 66446123 is about 8151.4491349698. The cubic root of 66446123 is about 405.0325086947.

The spelling of 66446123 in words is "sixty-six million, four hundred forty-six thousand, one hundred twenty-three".