222206634 has 192 divisors, whose sum is σ = 594397440. Its totient is φ = 59304960.

The previous prime is 222206627. The next prime is 222206669. The reversal of 222206634 is 436602222.

222206634 is a `hidden beast` number, since 2 + 2 + 2 + 20 + 6 + 634 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 222206598 and 222206607.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4192552 + ... + 4192604.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 2^222206634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222206634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297198720).

222206634 is an abundant number, since it is smaller than the sum of its proper divisors (372190806).

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

222206634 is a wasteful number, since it uses less digits than its factorization.

222206634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 222206634 is about 14906.5969959612. The cubic root of 222206634 is about 605.6927011064.

Adding to 222206634 its reverse (436602222), we get a palindrome (658808856).

The spelling of 222206634 in words is "two hundred twenty-two million, two hundred six thousand, six hundred thirty-four".