5638855 has 8 divisors (see below), whose sum is σ = 6779952. Its totient is φ = 4502208.

The previous prime is 5638823. The next prime is 5638859. The reversal of 5638855 is 5588365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5638855 - 2⁵ = 5638823 is a prime.

It is a super-2 number, since 2×5638855² = 63593371422050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (847494).

Almost surely, 2^5638855 is an apocalyptic number.

5638855 is a deficient number, since it is larger than the sum of its proper divisors (1141097).

5638855 is a wasteful number, since it uses less digits than its factorization.

5638855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its digits is 144000, while the sum is 40.

The square root of 5638855 is about 2374.6273391840. The cubic root of 5638855 is about 177.9905625599.

The spelling of 5638855 in words is "five million, six hundred thirty-eight thousand, eight hundred fifty-five".