222446690 has 16 divisors (see below), whose sum is σ = 401011128. Its totient is φ = 88843776.

The previous prime is 222446677. The next prime is 222446711. The reversal of 222446690 is 96644222.

It can be written as a sum of positive squares in 4 ways, for example, as 194239969 + 28206721 = 13937^2 + 5311^2 .

It is a super-2 number, since 2×222446690² = 98965059783912200, 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 222446690.

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, 9797 + ... + 23256.

Almost surely, 2^222446690 is an apocalyptic number.

222446690 is a deficient number, since it is larger than the sum of its proper divisors (178564438).

222446690 is a wasteful number, since it uses less digits than its factorization.

222446690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33733.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 222446690 is about 14914.6468278669. The cubic root of 222446690 is about 605.9107381588.

The spelling of 222446690 in words is "two hundred twenty-two million, four hundred forty-six thousand, six hundred ninety".