5638863 has 4 divisors (see below), whose sum is σ = 7518488. Its totient is φ = 3759240.

The previous prime is 5638859. The next prime is 5638873. The reversal of 5638863 is 3688365.

5638863 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5638863 - 2² = 5638859 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638823) 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, 939808 + ... + 939813.

It is an arithmetic number, because the mean of its divisors is an integer number (1879622).

Almost surely, 2^5638863 is an apocalyptic number.

5638863 is a deficient number, since it is larger than the sum of its proper divisors (1879625).

5638863 is a wasteful number, since it uses less digits than its factorization.

5638863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879624.

The product of its digits is 103680, while the sum is 39.

The square root of 5638863 is about 2374.6290236582. The cubic root of 5638863 is about 177.9906467332.

The spelling of 5638863 in words is "five million, six hundred thirty-eight thousand, eight hundred sixty-three".