66044063 has 6 divisors (see below), whose sum is σ = 69040944. Its totient is φ = 63172076.

The previous prime is 66044039. The next prime is 66044089. The reversal of 66044063 is 36044066.

It is not a de Polignac number, because 66044063 - 2²⁰ = 64995487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044003) 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 in 5 ways as a sum of consecutive naturals, for example, 61895 + ... + 62952.

It is an arithmetic number, because the mean of its divisors is an integer number (11506824).

Almost surely, 2^66044063 is an apocalyptic number.

66044063 is a deficient number, since it is larger than the sum of its proper divisors (2996881).

66044063 is a wasteful number, since it uses less digits than its factorization.

66044063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124893 (or 124870 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 66044063 is about 8126.7498423416. The cubic root of 66044063 is about 404.2139159744.

The spelling of 66044063 in words is "sixty-six million, forty-four thousand, sixty-three".