66227274 has 64 divisors (see below), whose sum is σ = 164073600. Its totient is φ = 19678464.

The previous prime is 66227219. The next prime is 66227297. The reversal of 66227274 is 47272266.

66227274 is a `hidden beast` number, since 6 + 622 + 7 + 27 + 4 = 666.

66227274 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 31 ways as a sum of consecutive naturals, for example, 15544 + ... + 19340.

It is an arithmetic number, because the mean of its divisors is an integer number (2563650).

Almost surely, 2^66227274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66227274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82036800).

66227274 is an abundant number, since it is smaller than the sum of its proper divisors (97846326).

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

66227274 is a wasteful number, since it uses less digits than its factorization.

66227274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844 (or 3838 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 66227274 is about 8138.0141312239. The cubic root of 66227274 is about 404.5873437459.

The spelling of 66227274 in words is "sixty-six million, two hundred twenty-seven thousand, two hundred seventy-four".