5640887808 has 180 divisors, whose sum is σ = 17186989248. Its totient is φ = 1780807680.

The previous prime is 5640887801. The next prime is 5640887849. The reversal of 5640887808 is 8087880465.

5640887808 is a `hidden beast` number, since 564 + 0 + 8 + 8 + 78 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640887801) 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 17 ways as a sum of consecutive naturals, for example, 1661793 + ... + 1665183.

Almost surely, 2^5640887808 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 5640887808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8593494624).

5640887808 is an abundant number, since it is smaller than the sum of its proper divisors (11546101440).

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

5640887808 is a wasteful number, since it uses less digits than its factorization.

5640887808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The square root of 5640887808 is about 75105.8440336037. The cubic root of 5640887808 is about 1780.1194853091.

The spelling of 5640887808 in words is "five billion, six hundred forty million, eight hundred eighty-seven thousand, eight hundred eight".