222427666 has 16 divisors (see below), whose sum is σ = 345800448. Its totient is φ = 107190000.

The previous prime is 222427649. The next prime is 222427679. The reversal of 222427666 is 666724222.

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 7 ways as a sum of consecutive naturals, for example, 8416 + ... + 22708.

It is an arithmetic number, because the mean of its divisors is an integer number (21612528).

Almost surely, 2^222427666 is an apocalyptic number.

222427666 is a deficient number, since it is larger than the sum of its proper divisors (123372782).

222427666 is a wasteful number, since it uses less digits than its factorization.

222427666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14577.

The product of its digits is 96768, while the sum is 37.

The square root of 222427666 is about 14914.0090518948. The cubic root of 222427666 is about 605.8934648449.

It can be divided in two parts, 2224 and 27666, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 222427666 in words is "two hundred twenty-two million, four hundred twenty-seven thousand, six hundred sixty-six".