5639784 has 64 divisors (see below), whose sum is σ = 15603840. Its totient is φ = 1689600.

The previous prime is 5639773. The next prime is 5639797. The reversal of 5639784 is 4879365.

It is a happy number.

It is a d-powerful number, because it can be written as 5 + 6³ + 3³ + 9⁷ + 7⁷ + 8⁵ + 4⁴ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9084 + ... + 9684.

It is an arithmetic number, because the mean of its divisors is an integer number (243810).

Almost surely, 2^5639784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5639784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7801920).

5639784 is an abundant number, since it is smaller than the sum of its proper divisors (9964056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5639784 is a wasteful number, since it uses less digits than its factorization.

5639784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 646 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 5639784 is about 2374.8229407684. The cubic root of 5639784 is about 178.0003366572. Note that the first 3 decimals are identical.

The spelling of 5639784 in words is "five million, six hundred thirty-nine thousand, seven hundred eighty-four".