66574222 has 16 divisors (see below), whose sum is σ = 117320112. Its totient is φ = 27933120.

The previous prime is 66574219. The next prime is 66574237. The reversal of 66574222 is 22247566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116103 + ... + 116674.

It is an arithmetic number, because the mean of its divisors is an integer number (7332507).

Almost surely, 2^66574222 is an apocalyptic number.

66574222 is a deficient number, since it is larger than the sum of its proper divisors (50745890).

66574222 is a wasteful number, since it uses less digits than its factorization.

66574222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232803.

The product of its digits is 40320, while the sum is 34.

The square root of 66574222 is about 8159.3027888417. The cubic root of 66574222 is about 405.2926239617.

The spelling of 66574222 in words is "sixty-six million, five hundred seventy-four thousand, two hundred twenty-two".