66044212 has 48 divisors (see below), whose sum is σ = 129491712. Its totient is φ = 29278080.

The previous prime is 66044207. The next prime is 66044221. The reversal of 66044212 is 21244066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148863 + ... + 149305.

It is an arithmetic number, because the mean of its divisors is an integer number (2697744).

Almost surely, 2^66044212 is an apocalyptic number.

It is an amenable number.

66044212 is a deficient number, since it is larger than the sum of its proper divisors (63447500).

66044212 is a wasteful number, since it uses less digits than its factorization.

66044212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 66044212 is about 8126.7590095929. The cubic root of 66044212 is about 404.2142199524.

Adding to 66044212 its reverse (21244066), we get a palindrome (87288278).

It can be divided in two parts, 6604 and 4212, that added together give a square (10816 = 104²).

The spelling of 66044212 in words is "sixty-six million, forty-four thousand, two hundred twelve".