1323297668 has 48 divisors (see below), whose sum is σ = 2917025664. Its totient is φ = 510243840.

The previous prime is 1323297667. The next prime is 1323297719. The reversal of 1323297668 is 8667923231.

It is a happy number.

It is a super-2 number, since 2×1323297668² = 3502233436268476448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323297667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7730 + ... + 52022.

It is an arithmetic number, because the mean of its divisors is an integer number (60771368).

Almost surely, 2^1323297668 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 1323297668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458512832).

1323297668 is an abundant number, since it is smaller than the sum of its proper divisors (1593727996).

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

1323297668 is a wasteful number, since it uses less digits than its factorization.

1323297668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44412 (or 44410 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 1323297668 is about 36377.1586026177. The cubic root of 1323297668 is about 1097.8740392752.

The spelling of 1323297668 in words is "one billion, three hundred twenty-three million, two hundred ninety-seven thousand, six hundred sixty-eight".