12001668 has 36 divisors (see below), whose sum is σ = 32577552. Its totient is φ = 3428880.

The previous prime is 12001667. The next prime is 12001697. The reversal of 12001668 is 86610021.

It is not an unprimeable number, because it can be changed into a prime (12001667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9618 + ... + 10793.

It is an arithmetic number, because the mean of its divisors is an integer number (904932).

Almost surely, 2^12001668 is an apocalyptic number.

It is an amenable number.

12001668 is an abundant number, since it is smaller than the sum of its proper divisors (20575884).

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

12001668 is a wasteful number, since it uses less digits than its factorization.

12001668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432 (or 20423 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 12001668 is about 3464.3423618343. The cubic root of 12001668 is about 228.9534557045.

Adding to 12001668 its reverse (86610021), we get a palindrome (98611689).

The spelling of 12001668 in words is "twelve million, one thousand, six hundred sixty-eight".