8706865 has 4 divisors (see below), whose sum is σ = 10448244. Its totient is φ = 6965488.

The previous prime is 8706853. The next prime is 8706869. The reversal of 8706865 is 5686078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5686078 = 2 ⋅2843039.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 2792241 = 2432^2 + 1671^2 .

It is a cyclic number.

It is not a de Polignac number, because 8706865 - 2⁵ = 8706833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8706869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870682 + ... + 870691.

It is an arithmetic number, because the mean of its divisors is an integer number (2612061).

Almost surely, 2^8706865 is an apocalyptic number.

It is an amenable number.

8706865 is a deficient number, since it is larger than the sum of its proper divisors (1741379).

8706865 is a wasteful number, since it uses less digits than its factorization.

8706865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741378.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 8706865 is about 2950.7397377607. The cubic root of 8706865 is about 205.7250943900.

The spelling of 8706865 in words is "eight million, seven hundred six thousand, eight hundred sixty-five".