12066889 has 4 divisors (see below), whose sum is σ = 12776724. Its totient is φ = 11357056.

The previous prime is 12066883. The next prime is 12066893. The reversal of 12066889 is 98866021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 4182025 = 2808^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 12066889 - 2⁹ = 12066377 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12066883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354892 + ... + 354925.

It is an arithmetic number, because the mean of its divisors is an integer number (3194181).

Almost surely, 2^12066889 is an apocalyptic number.

It is an amenable number.

12066889 is a deficient number, since it is larger than the sum of its proper divisors (709835).

12066889 is an equidigital number, since it uses as much as digits as its factorization.

12066889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709834.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 12066889 is about 3473.7427941631. The cubic root of 12066889 is about 229.3674427493.

The spelling of 12066889 in words is "twelve million, sixty-six thousand, eight hundred eighty-nine".