5615622720 has 252 divisors, whose sum is σ = 19968415740. Its totient is φ = 1448478720.

The previous prime is 5615622713. The next prime is 5615622721. The reversal of 5615622720 is 272265165.

5615622720 is a `hidden beast` number, since 5 + 6 + 1 + 5 + 622 + 7 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4286582784 + 1329039936 = 65472^2 + 36456^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5615622721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2766666 + ... + 2768694.

It is an arithmetic number, because the mean of its divisors is an integer number (79239745).

Almost surely, 2^5615622720 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 5615622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9984207870).

5615622720 is an abundant number, since it is smaller than the sum of its proper divisors (14352793020).

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

5615622720 is a wasteful number, since it uses less digits than its factorization.

5615622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 5615622720 is about 74937.4587239252. The cubic root of 5615622720 is about 1777.4578363597.

Adding to 5615622720 its reverse (272265165), we get a palindrome (5887887885).

The spelling of 5615622720 in words is "five billion, six hundred fifteen million, six hundred twenty-two thousand, seven hundred twenty".