12065209 has 8 divisors (see below), whose sum is σ = 13677440. Its totient is φ = 10550736.

The previous prime is 12065203. The next prime is 12065237. The reversal of 12065209 is 90256021.

12065209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12065209 - 2¹⁷ = 11934137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12065203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24177 + ... + 24670.

It is an arithmetic number, because the mean of its divisors is an integer number (1709680).

Almost surely, 2^12065209 is an apocalyptic number.

12065209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12065209 is a deficient number, since it is larger than the sum of its proper divisors (1612231).

12065209 is a wasteful number, since it uses less digits than its factorization.

12065209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48879.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12065209 is about 3473.5009716423. The cubic root of 12065209 is about 229.3567977745.

The spelling of 12065209 in words is "twelve million, sixty-five thousand, two hundred nine".