653421222 has 32 divisors (see below), whose sum is σ = 1460091360. Its totient is φ = 216600480.

The previous prime is 653421199. The next prime is 653421227. The reversal of 653421222 is 222124356.

It is a happy number.

653421222 is a `hidden beast` number, since 6 + 534 + 2 + 122 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653421227) 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, 23653 + ... + 43200.

It is an arithmetic number, because the mean of its divisors is an integer number (45627855).

Almost surely, 2^653421222 is an apocalyptic number.

653421222 is an abundant number, since it is smaller than the sum of its proper divisors (806670138).

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

653421222 is a wasteful number, since it uses less digits than its factorization.

653421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67045 (or 67039 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 653421222 is about 25562.1051949952. The cubic root of 653421222 is about 867.7562396416.

Adding to 653421222 its reverse (222124356), we get a palindrome (875545578).

It can be divided in two parts, 65342 and 1222, that added together give a square (66564 = 258²).

The spelling of 653421222 in words is "six hundred fifty-three million, four hundred twenty-one thousand, two hundred twenty-two".