222655680 has 336 divisors, whose sum is σ = 870935520. Its totient is φ = 51757056.

The previous prime is 222655639. The next prime is 222655687. The reversal of 222655680 is 86556222.

222655680 is a `hidden beast` number, since 2 + 2 + 26 + 556 + 80 = 666.

222655680 is digitally balanced in base 3, 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 (36).

It is not an unprimeable number, because it can be changed into a prime (222655687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711204 + ... + 711516.

It is an arithmetic number, because the mean of its divisors is an integer number (2592070).

Almost surely, 2^222655680 is an apocalyptic number.

222655680 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 222655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435467760).

222655680 is an abundant number, since it is smaller than the sum of its proper divisors (648279840).

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

222655680 is a wasteful number, since it uses less digits than its factorization.

222655680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 222655680 is about 14921.6513831412. The cubic root of 222655680 is about 606.1004310234.

The spelling of 222655680 in words is "two hundred twenty-two million, six hundred fifty-five thousand, six hundred eighty".