66272444 has 24 divisors (see below), whose sum is σ = 135367680. Its totient is φ = 27797616.

The previous prime is 66272383. The next prime is 66272461. The reversal of 66272444 is 44427266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23864 + ... + 26495.

It is an arithmetic number, because the mean of its divisors is an integer number (5640320).

Almost surely, 2^66272444 is an apocalyptic number.

It is an amenable number.

66272444 is an abundant number, since it is smaller than the sum of its proper divisors (69095236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66272444 is a wasteful number, since it uses less digits than its factorization.

66272444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50417 (or 50415 counting only the distinct ones).

The product of its digits is 64512, while the sum is 35.

The square root of 66272444 is about 8140.7889052597. The cubic root of 66272444 is about 404.6793051386.

The spelling of 66272444 in words is "sixty-six million, two hundred seventy-two thousand, four hundred forty-four".