6559889620 has 36 divisors (see below), whose sum is σ = 14633787420. Its totient is φ = 2469603328.

The previous prime is 6559889591. The next prime is 6559889621. The reversal of 6559889620 is 269889556.

It can be written as a sum of positive squares in 6 ways, for example, as 1387115536 + 5172774084 = 37244^2 + 71922^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6559889621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561685 + ... + 573244.

It is an arithmetic number, because the mean of its divisors is an integer number (406494095).

Almost surely, 2^6559889620 is an apocalyptic number.

It is an amenable number.

6559889620 is an abundant number, since it is smaller than the sum of its proper divisors (8073897800).

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

6559889620 is a wasteful number, since it uses less digits than its factorization.

6559889620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134972 (or 1134953 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 58.

The square root of 6559889620 is about 80993.1455124444. The cubic root of 6559889620 is about 1871.9698251187.

The spelling of 6559889620 in words is "six billion, five hundred fifty-nine million, eight hundred eighty-nine thousand, six hundred twenty".