66044039 has 2 divisors, whose sum is σ = 66044040. Its totient is φ = 66044038.

The previous prime is 66044023. The next prime is 66044089. The reversal of 66044039 is 93044066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66044039 - 2⁴ = 66044023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66043996 and 66044014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66044009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33022019 + 33022020.

It is an arithmetic number, because the mean of its divisors is an integer number (33022020).

Almost surely, 2^66044039 is an apocalyptic number.

66044039 is a deficient number, since it is larger than the sum of its proper divisors (1).

66044039 is an equidigital number, since it uses as much as digits as its factorization.

66044039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66044039 is about 8126.7483657364. The cubic root of 66044039 is about 404.2138670115.

The spelling of 66044039 in words is "sixty-six million, forty-four thousand, thirty-nine".