666239222 has 16 divisors (see below), whose sum is σ = 1093941072. Its totient is φ = 301799520.

The previous prime is 666239213. The next prime is 666239261. The reversal of 666239222 is 222932666.

666239222 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45233 + ... + 58124.

It is an arithmetic number, because the mean of its divisors is an integer number (68371317).

Almost surely, 2^666239222 is an apocalyptic number.

666239222 is a deficient number, since it is larger than the sum of its proper divisors (427701850).

666239222 is a wasteful number, since it uses less digits than its factorization.

666239222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103663.

The product of its digits is 93312, while the sum is 38.

The square root of 666239222 is about 25811.6102171097. The cubic root of 666239222 is about 873.3937211641.

The spelling of 666239222 in words is "six hundred sixty-six million, two hundred thirty-nine thousand, two hundred twenty-two".