6559889622 has 64 divisors (see below), whose sum is σ = 15526232064. Its totient is φ = 1821507840.

The previous prime is 6559889621. The next prime is 6559889657. The reversal of 6559889622 is 2269889556.

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 31 ways as a sum of consecutive naturals, for example, 89643 + ... + 145449.

It is an arithmetic number, because the mean of its divisors is an integer number (242597376).

Almost surely, 2^6559889622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6559889622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7763116032).

6559889622 is an abundant number, since it is smaller than the sum of its proper divisors (8966342442).

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

6559889622 is a wasteful number, since it uses less digits than its factorization.

6559889622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55973.

The product of its digits is 18662400, while the sum is 60.

The square root of 6559889622 is about 80993.1455247912. The cubic root of 6559889622 is about 1871.9698253090.

The spelling of 6559889622 in words is "six billion, five hundred fifty-nine million, eight hundred eighty-nine thousand, six hundred twenty-two".