12066609 has 4 divisors (see below), whose sum is σ = 16088816. Its totient is φ = 8044404.

The previous prime is 12066557. The next prime is 12066611. The reversal of 12066609 is 90666021.

12066609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12066609 - 2¹² = 12062513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12066679) 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, 2011099 + ... + 2011104.

It is an arithmetic number, because the mean of its divisors is an integer number (4022204).

Almost surely, 2^12066609 is an apocalyptic number.

It is an amenable number.

12066609 is a deficient number, since it is larger than the sum of its proper divisors (4022207).

12066609 is an equidigital number, since it uses as much as digits as its factorization.

12066609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022206.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 12066609 is about 3473.7024915787. The cubic root of 12066609 is about 229.3656686555.

The spelling of 12066609 in words is "twelve million, sixty-six thousand, six hundred nine".