13209066 has 48 divisors (see below), whose sum is σ = 32454240. Its totient is φ = 3849120.

The previous prime is 13209019. The next prime is 13209089. The reversal of 13209066 is 66090231.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2961 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (676130).

Almost surely, 2^13209066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13209066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16227120).

13209066 is an abundant number, since it is smaller than the sum of its proper divisors (19245174).

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

13209066 is a wasteful number, since it uses less digits than its factorization.

13209066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13209066 is about 3634.4278779472. The cubic root of 13209066 is about 236.3872436794.

Adding to 13209066 its reverse (66090231), we get a palindrome (79299297).

The spelling of 13209066 in words is "thirteen million, two hundred nine thousand, sixty-six".