66272768 has 20 divisors (see below), whose sum is σ = 132417120. Its totient is φ = 33136128.

The previous prime is 66272719. The next prime is 66272797. The reversal of 66272768 is 86727266.

66272768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 64208 + ... + 65231.

It is an arithmetic number, because the mean of its divisors is an integer number (6620856).

Almost surely, 2^66272768 is an apocalyptic number.

It is an amenable number.

66272768 is a deficient number, since it is larger than the sum of its proper divisors (66144352).

66272768 is an equidigital number, since it uses as much as digits as its factorization.

66272768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129457 (or 129441 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 66272768 is about 8140.8088050267. The cubic root of 66272768 is about 404.6799646177.

The spelling of 66272768 in words is "sixty-six million, two hundred seventy-two thousand, seven hundred sixty-eight".