8201865 has 24 divisors (see below), whose sum is σ = 15266880. Its totient is φ = 3749088.

The previous prime is 8201861. The next prime is 8201873. The reversal of 8201865 is 5681028.

8201865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8201865 - 2² = 8201861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8201861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4845 + ... + 6314.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^8201865 is an apocalyptic number.

It is an amenable number.

8201865 is a deficient number, since it is larger than the sum of its proper divisors (7065015).

8201865 is a wasteful number, since it uses less digits than its factorization.

8201865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181 (or 11174 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 8201865 is about 2863.8898372668. The cubic root of 8201865 is about 201.6682542810.

The spelling of 8201865 in words is "eight million, two hundred one thousand, eight hundred sixty-five".