12665133 has 16 divisors (see below), whose sum is σ = 20207040. Its totient is φ = 7793712.

The previous prime is 12665131. The next prime is 12665167. The reversal of 12665133 is 33156621.

12665133 is a `hidden beast` number, since 1 + 2 + 6 + 651 + 3 + 3 = 666.

12665133 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 12665133 - 2¹ = 12665131 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 12665097 and 12665106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17691 + ... + 18392.

It is an arithmetic number, because the mean of its divisors is an integer number (1262940).

Almost surely, 2^12665133 is an apocalyptic number.

12665133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12665133 is a deficient number, since it is larger than the sum of its proper divisors (7541907).

12665133 is a wasteful number, since it uses less digits than its factorization.

12665133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36105 (or 36099 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 12665133 is about 3558.8106159221. The cubic root of 12665133 is about 233.0969467689.

The spelling of 12665133 in words is "twelve million, six hundred sixty-five thousand, one hundred thirty-three".