5638881 has 8 divisors (see below), whose sum is σ = 7558240. Its totient is φ = 3739392.

The previous prime is 5638873. The next prime is 5638939. The reversal of 5638881 is 1888365.

It is a happy number.

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

It is not a de Polignac number, because 5638881 - 2³ = 5638873 is a prime.

It is a super-2 number, since 2×5638881² = 63593957864322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5638811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4291 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (944780).

Almost surely, 2^5638881 is an apocalyptic number.

It is an amenable number.

5638881 is a deficient number, since it is larger than the sum of its proper divisors (1919359).

5638881 is a wasteful number, since it uses less digits than its factorization.

5638881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935.

The product of its digits is 46080, while the sum is 39.

The square root of 5638881 is about 2374.6328137209. The cubic root of 5638881 is about 177.9908361229.

The spelling of 5638881 in words is "five million, six hundred thirty-eight thousand, eight hundred eighty-one".