66044012 has 24 divisors (see below), whose sum is σ = 120486912. Its totient is φ = 31640400.

The previous prime is 66044009. The next prime is 66044023. The reversal of 66044012 is 21044066.

It is a happy number.

It is a super-2 number, since 2×66044012² = 8723623042112288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10187 + ... + 15357.

It is an arithmetic number, because the mean of its divisors is an integer number (5020288).

Almost surely, 2^66044012 is an apocalyptic number.

66044012 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66044012 is a deficient number, since it is larger than the sum of its proper divisors (54442900).

66044012 is a wasteful number, since it uses less digits than its factorization.

66044012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309 (or 5307 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 66044012 is about 8126.7467045553. The cubic root of 66044012 is about 404.2138119281.

Adding to 66044012 its reverse (21044066), we get a palindrome (87088078).

The spelling of 66044012 in words is "sixty-six million, forty-four thousand, twelve".