1324221668 has 72 divisors (see below), whose sum is σ = 3035821824. Its totient is φ = 499262400.

The previous prime is 1324221631. The next prime is 1324221709. The reversal of 1324221668 is 8661224231.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56930 + ... + 76742.

It is an arithmetic number, because the mean of its divisors is an integer number (42164192).

Almost surely, 2^1324221668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1324221668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517910912).

1324221668 is an abundant number, since it is smaller than the sum of its proper divisors (1711600156).

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

1324221668 is a wasteful number, since it uses less digits than its factorization.

1324221668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19873 (or 19864 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 1324221668 is about 36389.8566636364. The cubic root of 1324221668 is about 1098.1295120527.

Adding to 1324221668 its reverse (8661224231), we get a palindrome (9985445899).

The spelling of 1324221668 in words is "one billion, three hundred twenty-four million, two hundred twenty-one thousand, six hundred sixty-eight".