12805087 has 2 divisors, whose sum is σ = 12805088. Its totient is φ = 12805086.

The previous prime is 12805081. The next prime is 12805127. The reversal of 12805087 is 78050821.

12805087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12805087 - 2¹¹ = 12803039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12805081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402543 + 6402544.

It is an arithmetic number, because the mean of its divisors is an integer number (6402544).

Almost surely, 2^12805087 is an apocalyptic number.

12805087 is a deficient number, since it is larger than the sum of its proper divisors (1).

12805087 is an equidigital number, since it uses as much as digits as its factorization.

12805087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 12805087 is about 3578.4196232415. The cubic root of 12805087 is about 233.9524034491.

The spelling of 12805087 in words is "twelve million, eight hundred five thousand, eighty-seven".