5638837 has 8 divisors (see below), whose sum is σ = 5823576. Its totient is φ = 5455872.

The previous prime is 5638823. The next prime is 5638859. The reversal of 5638837 is 7388365.

It can be written as a sum of positive squares in 4 ways, for example, as 4036081 + 1602756 = 2009^2 + 1266^2 .

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

It is not a de Polignac number, because 5638837 - 2⁷ = 5638709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5638837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638817) 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, 9213 + ... + 9805.

It is an arithmetic number, because the mean of its divisors is an integer number (727947).

Almost surely, 2^5638837 is an apocalyptic number.

It is an amenable number.

5638837 is a deficient number, since it is larger than the sum of its proper divisors (184739).

5638837 is a wasteful number, since it uses less digits than its factorization.

5638837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its digits is 120960, while the sum is 40.

The square root of 5638837 is about 2374.6235491126. The cubic root of 5638837 is about 177.9903731695.

The spelling of 5638837 in words is "five million, six hundred thirty-eight thousand, eight hundred thirty-seven".