222424664 has 64 divisors (see below), whose sum is σ = 537926400. Its totient is φ = 83664000.

The previous prime is 222424639. The next prime is 222424669. The reversal of 222424664 is 466424222.

222424664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 222424664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222424669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11639 + ... + 24089.

It is an arithmetic number, because the mean of its divisors is an integer number (8405100).

Almost surely, 2^222424664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222424664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268963200).

222424664 is an abundant number, since it is smaller than the sum of its proper divisors (315501736).

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

222424664 is a wasteful number, since it uses less digits than its factorization.

222424664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504 (or 12500 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 222424664 is about 14913.9084079258. The cubic root of 222424664 is about 605.8907390144.

Adding to 222424664 its reverse (466424222), we get a palindrome (688848886).

The spelling of 222424664 in words is "two hundred twenty-two million, four hundred twenty-four thousand, six hundred sixty-four".