655332222 has 16 divisors (see below), whose sum is σ = 1314557712. Its totient is φ = 217795200.

The previous prime is 655332193. The next prime is 655332229. The reversal of 655332222 is 222233556.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 655332222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655332229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160029 + ... + 164072.

It is an arithmetic number, because the mean of its divisors is an integer number (82159857).

Almost surely, 2^655332222 is an apocalyptic number.

655332222 is an abundant number, since it is smaller than the sum of its proper divisors (659225490).

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

655332222 is a wasteful number, since it uses less digits than its factorization.

655332222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324443.

The product of its digits is 21600, while the sum is 30.

The square root of 655332222 is about 25599.4574551884. The cubic root of 655332222 is about 868.6013648237.

Adding to 655332222 its reverse (222233556), we get a palindrome (877565778).

The spelling of 655332222 in words is "six hundred fifty-five million, three hundred thirty-two thousand, two hundred twenty-two".