5615856720 has 120 divisors (see below), whose sum is σ = 18914805000. Its totient is φ = 1493203968.

The previous prime is 5615856713. The next prime is 5615856737. The reversal of 5615856720 is 276585165.

5615856720 is a `hidden beast` number, since 5 + 6 + 1 + 585 + 67 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 359026704 + 5256830016 = 18948^2 + 72504^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 240106 + ... + 262454.

It is an arithmetic number, because the mean of its divisors is an integer number (157623375).

Almost surely, 2^5615856720 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 5615856720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9457402500).

5615856720 is an abundant number, since it is smaller than the sum of its proper divisors (13298948280).

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

5615856720 is a wasteful number, since it uses less digits than its factorization.

5615856720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22717 (or 22708 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 5615856720 is about 74939.0200096051. The cubic root of 5615856720 is about 1777.4825245898.

The spelling of 5615856720 in words is "five billion, six hundred fifteen million, eight hundred fifty-six thousand, seven hundred twenty".