13886865 has 12 divisors (see below), whose sum is σ = 24070644. Its totient is φ = 7406304.

The previous prime is 13886861. The next prime is 13886869. The reversal of 13886865 is 56868831.

13886865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13886861) and next prime (13886869).

It can be written as a sum of positive squares in 2 ways, for example, as 10246401 + 3640464 = 3201^2 + 1908^2 .

It is not a de Polignac number, because 13886865 - 2² = 13886861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 308597 = 13886865 / (1 + 3 + 8 + 8 + 6 + 8 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13886865.

It is not an unprimeable number, because it can be changed into a prime (13886861) 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 in 11 ways as a sum of consecutive naturals, for example, 154254 + ... + 154343.

It is an arithmetic number, because the mean of its divisors is an integer number (2005887).

Almost surely, 2^13886865 is an apocalyptic number.

13886865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13886865 is a deficient number, since it is larger than the sum of its proper divisors (10183779).

13886865 is a wasteful number, since it uses less digits than its factorization.

13886865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308608 (or 308605 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 13886865 is about 3726.5084194189. The cubic root of 13886865 is about 240.3632520059.

The spelling of 13886865 in words is "thirteen million, eight hundred eighty-six thousand, eight hundred sixty-five".