659861622 has 48 divisors (see below), whose sum is σ = 1639845792. Its totient is φ = 187850880.

The previous prime is 659861611. The next prime is 659861669. The reversal of 659861622 is 226168956.

659861622 is a `hidden beast` number, since 6 + 5 + 9 + 8 + 616 + 22 = 666.

659861622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26088 + ... + 44724.

It is an arithmetic number, because the mean of its divisors is an integer number (34163454).

Almost surely, 2^659861622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659861622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819922896).

659861622 is an abundant number, since it is smaller than the sum of its proper divisors (979984170).

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

659861622 is a wasteful number, since it uses less digits than its factorization.

659861622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18933 (or 18930 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 659861622 is about 25687.7718379777. The cubic root of 659861622 is about 870.5979163698.

The spelling of 659861622 in words is "six hundred fifty-nine million, eight hundred sixty-one thousand, six hundred twenty-two".