5638847 has 4 divisors (see below), whose sum is σ = 5833320. Its totient is φ = 5444376.

The previous prime is 5638823. The next prime is 5638859. The reversal of 5638847 is 7488365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7488365 = 5 ⋅1497673.

It is a cyclic number.

It is not a de Polignac number, because 5638847 - 2¹⁰ = 5637823 is a prime.

It is a Duffinian number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97193 + ... + 97250.

It is an arithmetic number, because the mean of its divisors is an integer number (1458330).

Almost surely, 2^5638847 is an apocalyptic number.

5638847 is a deficient number, since it is larger than the sum of its proper divisors (194473).

5638847 is a wasteful number, since it uses less digits than its factorization.

5638847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194472.

The product of its digits is 161280, while the sum is 41.

The square root of 5638847 is about 2374.6256547085. The cubic root of 5638847 is about 177.9904783864.

The spelling of 5638847 in words is "five million, six hundred thirty-eight thousand, eight hundred forty-seven".