2863863 has 16 divisors (see below), whose sum is σ = 4303840. Its totient is φ = 1881792.

The previous prime is 2863859. The next prime is 2863867. The reversal of 2863863 is 3683682.

It is an interprime number because it is at equal distance from previous prime (2863859) and next prime (2863867).

It is not a de Polignac number, because 2863863 - 2² = 2863859 is a prime.

It is a super-2 number, since 2×2863863² = 16403422565538, which contains 22 as substring.

It is a Duffinian number.

2863863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245 + ... + 2697.

It is an arithmetic number, because the mean of its divisors is an integer number (268990).

2^2863863 is an apocalyptic number.

2863863 is a deficient number, since it is larger than the sum of its proper divisors (1439977).

2863863 is a wasteful number, since it uses less digits than its factorization.

2863863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1529 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2863863 is about 1692.2951870167. The cubic root of 2863863 is about 142.0095047529.

The spelling of 2863863 in words is "two million, eight hundred sixty-three thousand, eight hundred sixty-three".