5638816 has 12 divisors (see below), whose sum is σ = 11101482. Its totient is φ = 2819392.

The previous prime is 5638811. The next prime is 5638817. The reversal of 5638816 is 6188365.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 163216 = 2340^2 + 404^2 .

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 as a sum of consecutive naturals, namely, 88075 + ... + 88138.

Almost surely, 2^5638816 is an apocalyptic number.

It is an amenable number.

5638816 is a deficient number, since it is larger than the sum of its proper divisors (5462666).

5638816 is a wasteful number, since it uses less digits than its factorization.

5638816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176223 (or 176215 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 5638816 is about 2374.6191273550. The cubic root of 5638816 is about 177.9901522137.

The spelling of 5638816 in words is "five million, six hundred thirty-eight thousand, eight hundred sixteen".