66072338 has 16 divisors (see below), whose sum is σ = 101645280. Its totient is φ = 32194176.

The previous prime is 66072317. The next prime is 66072341. The reversal of 66072338 is 83327066.

66072338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66072298 and 66072307.

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 in 7 ways as a sum of consecutive naturals, for example, 70658 + ... + 71586.

It is an arithmetic number, because the mean of its divisors is an integer number (6352830).

Almost surely, 2^66072338 is an apocalyptic number.

66072338 is a deficient number, since it is larger than the sum of its proper divisors (35572942).

66072338 is a wasteful number, since it uses less digits than its factorization.

66072338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 66072338 is about 8128.4892815332. The cubic root of 66072338 is about 404.2715922051.

The spelling of 66072338 in words is "sixty-six million, seventy-two thousand, three hundred thirty-eight".