12366865 has 16 divisors (see below), whose sum is σ = 17308800. Its totient is φ = 8478960.

The previous prime is 12366863. The next prime is 12366869. The reversal of 12366865 is 56866321.

12366865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12366865 - 2¹ = 12366863 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12366863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1891 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (1081800).

Almost surely, 2^12366865 is an apocalyptic number.

It is an amenable number.

12366865 is a deficient number, since it is larger than the sum of its proper divisors (4941935).

12366865 is an frugal number, since it uses more digits than its factorization.

12366865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237 (or 7223 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 12366865 is about 3516.6553712299. The cubic root of 12366865 is about 231.2525551215.

It can be divided in two parts, 12366 and 865, that added together give a palindrome (13231).

The spelling of 12366865 in words is "twelve million, three hundred sixty-six thousand, eight hundred sixty-five".