66274386 has 16 divisors (see below), whose sum is σ = 132887424. Its totient is φ = 22035024.

The previous prime is 66274379. The next prime is 66274391. The reversal of 66274386 is 68347266.

66274386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11530 + ... + 16293.

It is an arithmetic number, because the mean of its divisors is an integer number (8305464).

Almost surely, 2^66274386 is an apocalyptic number.

66274386 is an abundant number, since it is smaller than the sum of its proper divisors (66613038).

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

66274386 is a wasteful number, since it uses less digits than its factorization.

66274386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28225.

The product of its digits is 290304, while the sum is 42.

The square root of 66274386 is about 8140.9081802954. The cubic root of 66274386 is about 404.6832579103.

The spelling of 66274386 in words is "sixty-six million, two hundred seventy-four thousand, three hundred eighty-six".