222345660 has 48 divisors (see below), whose sum is σ = 623369376. Its totient is φ = 59215872.

The previous prime is 222345611. The next prime is 222345661. The reversal of 222345660 is 66543222.

222345660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222345661) 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, 56724 + ... + 60516.

It is an arithmetic number, because the mean of its divisors is an integer number (12986862).

Almost surely, 2^222345660 is an apocalyptic number.

222345660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222345660 is an abundant number, since it is smaller than the sum of its proper divisors (401023716).

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

222345660 is a wasteful number, since it uses less digits than its factorization.

222345660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 4780 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 222345660 is about 14911.2595041465. The cubic root of 222345660 is about 605.8189941823.

Adding to 222345660 its reverse (66543222), we get a palindrome (288888882).

The spelling of 222345660 in words is "two hundred twenty-two million, three hundred forty-five thousand, six hundred sixty".