66044085 has 16 divisors (see below), whose sum is σ = 105805440. Its totient is φ = 35178560.

The previous prime is 66044039. The next prime is 66044089. The reversal of 66044085 is 58044066.

It is a happy number.

It is not a de Polignac number, because 66044085 - 2¹¹ = 66042037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11776 + ... + 16454.

It is an arithmetic number, because the mean of its divisors is an integer number (6612840).

Almost surely, 2^66044085 is an apocalyptic number.

It is an amenable number.

66044085 is a deficient number, since it is larger than the sum of its proper divisors (39761355).

66044085 is a wasteful number, since it uses less digits than its factorization.

66044085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 66044085 is about 8126.7511958962. The cubic root of 66044085 is about 404.2139608571.

The spelling of 66044085 in words is "sixty-six million, forty-four thousand, eighty-five".