12865087 has 2 divisors, whose sum is σ = 12865088. Its totient is φ = 12865086.

The previous prime is 12865063. The next prime is 12865091. The reversal of 12865087 is 78056821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12865087 - 2⁷ = 12864959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12865057) by changing a digit.

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 as a sum of consecutive naturals, namely, 6432543 + 6432544.

It is an arithmetic number, because the mean of its divisors is an integer number (6432544).

Almost surely, 2^12865087 is an apocalyptic number.

12865087 is a deficient number, since it is larger than the sum of its proper divisors (1).

12865087 is an equidigital number, since it uses as much as digits as its factorization.

12865087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12865087 is about 3586.7934147369. The cubic root of 12865087 is about 234.3172396213.

The spelling of 12865087 in words is "twelve million, eight hundred sixty-five thousand, eighty-seven".