222163650 has 144 divisors (see below), whose sum is σ = 640063944. Its totient is φ = 55050240.

The previous prime is 222163609. The next prime is 222163657. The reversal of 222163650 is 56361222.

222163650 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 6 + 3 + 650 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 34117281 + 188046369 = 5841^2 + 13713^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222163657) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 864322 + ... + 864578.

Almost surely, 2^222163650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222163650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320031972).

222163650 is an abundant number, since it is smaller than the sum of its proper divisors (417900294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222163650 is a wasteful number, since it uses less digits than its factorization.

222163650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 222163650 is about 14905.1551484713. The cubic root of 222163650 is about 605.6536432056.

The spelling of 222163650 in words is "two hundred twenty-two million, one hundred sixty-three thousand, six hundred fifty".