8700865 has 4 divisors (see below), whose sum is σ = 10441044. Its totient is φ = 6960688.

The previous prime is 8700833. The next prime is 8700869. The reversal of 8700865 is 5680078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5680078 = 2 ⋅2840039.

It can be written as a sum of positive squares in 2 ways, for example, as 4490161 + 4210704 = 2119^2 + 2052^2 .

It is a cyclic number.

It is not a de Polignac number, because 8700865 - 2⁵ = 8700833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8700865.

It is not an unprimeable number, because it can be changed into a prime (8700869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870082 + ... + 870091.

It is an arithmetic number, because the mean of its divisors is an integer number (2610261).

Almost surely, 2^8700865 is an apocalyptic number.

It is an amenable number.

8700865 is a deficient number, since it is larger than the sum of its proper divisors (1740179).

8700865 is a wasteful number, since it uses less digits than its factorization.

8700865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740178.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 8700865 is about 2949.7228683387. The cubic root of 8700865 is about 205.6778276945.

The spelling of 8700865 in words is "eight million, seven hundred thousand, eight hundred sixty-five".