8198865 has 24 divisors (see below), whose sum is σ = 14309568. Its totient is φ = 4342560.

The previous prime is 8198863. The next prime is 8198891. The reversal of 8198865 is 5688918.

8198865 = 538² + 539² + ... + 564².

8198865 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 8198865 - 2¹ = 8198863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8198865.

It is not an unprimeable number, because it can be changed into a prime (8198863) 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 23 ways as a sum of consecutive naturals, for example, 6970 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (596232).

Almost surely, 2^8198865 is an apocalyptic number.

It is an amenable number.

8198865 is a deficient number, since it is larger than the sum of its proper divisors (6110703).

8198865 is a wasteful number, since it uses less digits than its factorization.

8198865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1266 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 8198865 is about 2863.3660262006. The cubic root of 8198865 is about 201.6436631853.

The spelling of 8198865 in words is "eight million, one hundred ninety-eight thousand, eight hundred sixty-five".