222886660 has 96 divisors (see below), whose sum is σ = 518192640. Its totient is φ = 80179200.

The previous prime is 222886649. The next prime is 222886667. The reversal of 222886660 is 66688222.

It is not an unprimeable number, because it can be changed into a prime (222886667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 822325 + ... + 822595.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^222886660 is an apocalyptic number.

222886660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222886660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259096320).

222886660 is an abundant number, since it is smaller than the sum of its proper divisors (295305980).

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

222886660 is a wasteful number, since it uses less digits than its factorization.

222886660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 222886660 is about 14929.3891368669. The cubic root of 222886660 is about 606.3099453957.

It can be divided in two parts, 2228 and 86660, that added together give a palindrome (88888).

The spelling of 222886660 in words is "two hundred twenty-two million, eight hundred eighty-six thousand, six hundred sixty".