2678863 has 4 divisors (see below), whose sum is σ = 2922408. Its totient is φ = 2435320.

The previous prime is 2678839. The next prime is 2678873. The reversal of 2678863 is 3688762.

It is a happy number.

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 2678863 - 2⁵ = 2678831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678873) 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, 121756 + ... + 121777.

It is an arithmetic number, because the mean of its divisors is an integer number (730602).

2^2678863 is an apocalyptic number.

2678863 is a deficient number, since it is larger than the sum of its proper divisors (243545).

2678863 is a wasteful number, since it uses less digits than its factorization.

2678863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243544.

The product of its digits is 96768, while the sum is 40.

The square root of 2678863 is about 1636.7232508888. The cubic root of 2678863 is about 138.8833450113.

The spelling of 2678863 in words is "two million, six hundred seventy-eight thousand, eight hundred sixty-three".