5656845680 has 80 divisors (see below), whose sum is σ = 13866746400. Its totient is φ = 2140185600.

The previous prime is 5656845679. The next prime is 5656845721. The reversal of 5656845680 is 865486565.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062866 + ... + 1068174.

It is an arithmetic number, because the mean of its divisors is an integer number (173334330).

Almost surely, 2^5656845680 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 5656845680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6933373200).

5656845680 is an abundant number, since it is smaller than the sum of its proper divisors (8209900720).

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

5656845680 is a wasteful number, since it uses less digits than its factorization.

5656845680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042 (or 6036 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 53.

The square root of 5656845680 is about 75212.0048928361. The cubic root of 5656845680 is about 1781.7965365399.

The spelling of 5656845680 in words is "five billion, six hundred fifty-six million, eight hundred forty-five thousand, six hundred eighty".