222304666 has 16 divisors (see below), whose sum is σ = 336143808. Its totient is φ = 110260800.

The previous prime is 222304661. The next prime is 222304673. The reversal of 222304666 is 666403222.

It is not an unprimeable number, because it can be changed into a prime (222304661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149161 + ... + 150643.

It is an arithmetic number, because the mean of its divisors is an integer number (21008988).

Almost surely, 2^222304666 is an apocalyptic number.

222304666 is a deficient number, since it is larger than the sum of its proper divisors (113839142).

222304666 is a wasteful number, since it uses less digits than its factorization.

222304666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 222304666 is about 14909.8848419429. The cubic root of 222304666 is about 605.7817601593.

Adding to 222304666 its reverse (666403222), we get a palindrome (888707888).

It can be divided in two parts, 22230 and 4666, that added together give a square (26896 = 164²).

The spelling of 222304666 in words is "two hundred twenty-two million, three hundred four thousand, six hundred sixty-six".