66227222 has 32 divisors (see below), whose sum is σ = 105753600. Its totient is φ = 31062240.

The previous prime is 66227219. The next prime is 66227297. The reversal of 66227222 is 22272266.

66227222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 15 ways as a sum of consecutive naturals, for example, 444404 + ... + 444552.

It is an arithmetic number, because the mean of its divisors is an integer number (3304800).

Almost surely, 2^66227222 is an apocalyptic number.

66227222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66227222 is a deficient number, since it is larger than the sum of its proper divisors (39526378).

66227222 is a wasteful number, since it uses less digits than its factorization.

66227222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its digits is 8064, while the sum is 29.

The square root of 66227222 is about 8138.0109363406. The cubic root of 66227222 is about 404.5872378553.

Adding to 66227222 its reverse (22272266), we get a palindrome (88499488).

The spelling of 66227222 in words is "sixty-six million, two hundred twenty-seven thousand, two hundred twenty-two".