222266690 has 16 divisors (see below), whose sum is σ = 400266360. Its totient is φ = 88865280.

The previous prime is 222266689. The next prime is 222266717. The reversal of 222266690 is 96662222.

222266690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 215707969 + 6558721 = 14687^2 + 2561^2 .

It is a super-2 number, since 2×222266690² = 98804962967112200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222266690.

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, 26756 + ... + 34064.

Almost surely, 2^222266690 is an apocalyptic number.

222266690 is a deficient number, since it is larger than the sum of its proper divisors (177999670).

222266690 is a wasteful number, since it uses less digits than its factorization.

222266690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 222266690 is about 14908.6112700010. The cubic root of 222266690 is about 605.7472632402.

The spelling of 222266690 in words is "two hundred twenty-two million, two hundred sixty-six thousand, six hundred ninety".