2618863 has 4 divisors (see below), whose sum is σ = 2820328. Its totient is φ = 2417400.

The previous prime is 2618843. The next prime is 2618873. The reversal of 2618863 is 3688162.

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 2618863 - 2⁵ = 2618831 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 (2618813) 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, 100713 + ... + 100738.

It is an arithmetic number, because the mean of its divisors is an integer number (705082).

2^2618863 is an apocalyptic number.

2618863 is a deficient number, since it is larger than the sum of its proper divisors (201465).

2618863 is a wasteful number, since it uses less digits than its factorization.

2618863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201464.

The product of its digits is 13824, while the sum is 34.

The square root of 2618863 is about 1618.2901470379. The cubic root of 2618863 is about 137.8386232343.

It can be divided in two parts, 2618 and 863, that added together give a square (3481 = 59²).

The spelling of 2618863 in words is "two million, six hundred eighteen thousand, eight hundred sixty-three".