222088666 has 8 divisors (see below), whose sum is σ = 333720180. Its totient is φ = 110848608.

The previous prime is 222088651. The next prime is 222088673. The reversal of 222088666 is 666880222.

It can be written as a sum of positive squares in 2 ways, for example, as 217120225 + 4968441 = 14735^2 + 2229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96441 + ... + 98716.

Almost surely, 2^222088666 is an apocalyptic number.

222088666 is a deficient number, since it is larger than the sum of its proper divisors (111631514).

222088666 is a wasteful number, since it uses less digits than its factorization.

222088666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195728.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 222088666 is about 14902.6395648556. The cubic root of 222088666 is about 605.5854960791.

The spelling of 222088666 in words is "two hundred twenty-two million, eighty-eight thousand, six hundred sixty-six".