13865087 has 2 divisors, whose sum is σ = 13865088. Its totient is φ = 13865086.

The previous prime is 13865077. The next prime is 13865101. The reversal of 13865087 is 78056831.

It is a weak prime.

It is an emirp because it is prime and its reverse (78056831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13865087 - 2⁶ = 13865023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13865087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13865017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932543 + 6932544.

It is an arithmetic number, because the mean of its divisors is an integer number (6932544).

Almost surely, 2^13865087 is an apocalyptic number.

13865087 is a deficient number, since it is larger than the sum of its proper divisors (1).

13865087 is an equidigital number, since it uses as much as digits as its factorization.

13865087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 13865087 is about 3723.5852346898. The cubic root of 13865087 is about 240.2375368143.

The spelling of 13865087 in words is "thirteen million, eight hundred sixty-five thousand, eighty-seven".