66273712 has 20 divisors (see below), whose sum is σ = 131538456. Its totient is φ = 32328320.

The previous prime is 66273703. The next prime is 66273719. The reversal of 66273712 is 21737266.

It is a happy number.

66273712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66273719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49858 + ... + 51169.

Almost surely, 2^66273712 is an apocalyptic number.

It is an amenable number.

66273712 is a deficient number, since it is larger than the sum of its proper divisors (65264744).

66273712 is a wasteful number, since it uses less digits than its factorization.

66273712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101076 (or 101070 counting only the distinct ones).

The product of its digits is 21168, while the sum is 34.

The square root of 66273712 is about 8140.8667843173. The cubic root of 66273712 is about 404.6818860508.

The spelling of 66273712 in words is "sixty-six million, two hundred seventy-three thousand, seven hundred twelve".