66443030 has 16 divisors (see below), whose sum is σ = 121559184. Its totient is φ = 26141280.

The previous prime is 66443017. The next prime is 66443051. The reversal of 66443030 is 3034466.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 53852 + ... + 55071.

It is an arithmetic number, because the mean of its divisors is an integer number (7597449).

Almost surely, 2^66443030 is an apocalyptic number.

66443030 is a deficient number, since it is larger than the sum of its proper divisors (55116154).

66443030 is a wasteful number, since it uses less digits than its factorization.

66443030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108991.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 66443030 is about 8151.2594118946. The cubic root of 66443030 is about 405.0262239789.

Adding to 66443030 its reverse (3034466), we get a palindrome (69477496).

The spelling of 66443030 in words is "sixty-six million, four hundred forty-three thousand, thirty".