2086863 has 4 divisors (see below), whose sum is σ = 2782488. Its totient is φ = 1391240.

The previous prime is 2086853. The next prime is 2086879. The reversal of 2086863 is 3686802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2086863 - 2⁵ = 2086831 is a prime.

It is a D-number.

2086863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347808 + ... + 347813.

It is an arithmetic number, because the mean of its divisors is an integer number (695622).

2^2086863 is an apocalyptic number.

2086863 is a deficient number, since it is larger than the sum of its proper divisors (695625).

2086863 is an equidigital number, since it uses as much as digits as its factorization.

2086863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695624.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2086863 is about 1444.5978679203. The cubic root of 2086863 is about 127.7903264859.

The spelling of 2086863 in words is "two million, eighty-six thousand, eight hundred sixty-three".