5639520672 has 108 divisors (see below), whose sum is σ = 16653983346. Its totient is φ = 1879770240.

The previous prime is 5639520671. The next prime is 5639520683. The reversal of 5639520672 is 2760259365.

5639520672 is a `hidden beast` number, since 5 + 63 + 9 + 520 + 67 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5601624336 + 37896336 = 74844^2 + 6156^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is not an unprimeable number, because it can be changed into a prime (5639520671) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 196522 + ... + 223382.

Almost surely, 2^5639520672 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 5639520672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8326991673).

5639520672 is an abundant number, since it is smaller than the sum of its proper divisors (11014462674).

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

5639520672 is an frugal number, since it uses more digits than its factorization.

5639520672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26895 (or 26866 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 5639520672 is about 75096.7420864581. The cubic root of 5639520672 is about 1779.9756626728.

The spelling of 5639520672 in words is "five billion, six hundred thirty-nine million, five hundred twenty thousand, six hundred seventy-two".