12665322 has 40 divisors (see below), whose sum is σ = 29160516. Its totient is φ = 4105728.

The previous prime is 12665311. The next prime is 12665363. The reversal of 12665322 is 22356621.

12665322 is a `hidden beast` number, since 1 + 2 + 6 + 653 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12383361 + 281961 = 3519^2 + 531^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4938 + ... + 7050.

Almost surely, 2^12665322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12665322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14580258).

12665322 is an abundant number, since it is smaller than the sum of its proper divisors (16495194).

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

12665322 is a wasteful number, since it uses less digits than its factorization.

12665322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 2155 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 12665322 is about 3558.8371696384. The cubic root of 12665322 is about 233.0981062541.

The spelling of 12665322 in words is "twelve million, six hundred sixty-five thousand, three hundred twenty-two".