222266660 has 96 divisors (see below), whose sum is σ = 588107520. Its totient is φ = 68544000.

The previous prime is 222266647. The next prime is 222266663. The reversal of 222266660 is 66662222.

222266660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (222266663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154826 + ... + 156254.

It is an arithmetic number, because the mean of its divisors is an integer number (6126120).

Almost surely, 2^222266660 is an apocalyptic number.

222266660 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 222266660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294053760).

222266660 is an abundant number, since it is smaller than the sum of its proper divisors (365840860).

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

222266660 is a wasteful number, since it uses less digits than its factorization.

222266660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 222266660 is about 14908.6102638710. The cubic root of 222266660 is about 605.7472359870.

The spelling of 222266660 in words is "two hundred twenty-two million, two hundred sixty-six thousand, six hundred sixty".