5866865 has 4 divisors (see below), whose sum is σ = 7040244. Its totient is φ = 4693488.

The previous prime is 5866849. The next prime is 5866867. The reversal of 5866865 is 5686685.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5686685 = 5 ⋅1137337.

It can be written as a sum of positive squares in 2 ways, for example, as 4596736 + 1270129 = 2144^2 + 1127^2 .

It is a cyclic number.

It is not a de Polignac number, because 5866865 - 2⁴ = 5866849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5866867) 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, 586682 + ... + 586691.

It is an arithmetic number, because the mean of its divisors is an integer number (1760061).

Almost surely, 2^5866865 is an apocalyptic number.

It is an amenable number.

5866865 is a deficient number, since it is larger than the sum of its proper divisors (1173379).

5866865 is a wasteful number, since it uses less digits than its factorization.

5866865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173378.

The product of its digits is 345600, while the sum is 44.

The square root of 5866865 is about 2422.1612250220. The cubic root of 5866865 is about 180.3579809970.

The spelling of 5866865 in words is "five million, eight hundred sixty-six thousand, eight hundred sixty-five".