66072727 has 12 divisors (see below), whose sum is σ = 81382320. Its totient is φ = 53301696.

The previous prime is 66072719. The next prime is 66072733. The reversal of 66072727 is 72727066.

66072727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66072727 - 2³ = 66072719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66072707) 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 11 ways as a sum of consecutive naturals, for example, 38827 + ... + 40492.

It is an arithmetic number, because the mean of its divisors is an integer number (6781860).

Almost surely, 2^66072727 is an apocalyptic number.

66072727 is a deficient number, since it is larger than the sum of its proper divisors (15309593).

66072727 is a wasteful number, since it uses less digits than its factorization.

66072727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79350 (or 79343 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 66072727 is about 8128.5132096836. The cubic root of 66072727 is about 404.2723855847.

The spelling of 66072727 in words is "sixty-six million, seventy-two thousand, seven hundred twenty-seven".