13500865 has 8 divisors (see below), whose sum is σ = 18515520. Its totient is φ = 9257712.

The previous prime is 13500859. The next prime is 13500869. The reversal of 13500865 is 56800531.

13500865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13500865 - 2³ = 13500857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13500869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192835 + ... + 192904.

It is an arithmetic number, because the mean of its divisors is an integer number (2314440).

Almost surely, 2^13500865 is an apocalyptic number.

It is an amenable number.

13500865 is a deficient number, since it is larger than the sum of its proper divisors (5014655).

13500865 is an equidigital number, since it uses as much as digits as its factorization.

13500865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385751.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 13500865 is about 3674.3523238797. The cubic root of 13500865 is about 238.1152432492.

It can be divided in two parts, 13500 and 865, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 13500865 in words is "thirteen million, five hundred thousand, eight hundred sixty-five".