5621623568 has 80 divisors (see below), whose sum is σ = 12556339200. Its totient is φ = 2413107840.

The previous prime is 5621623561. The next prime is 5621623577. The reversal of 5621623568 is 8653261265.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (5621623561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311003 + ... + 328581.

It is an arithmetic number, because the mean of its divisors is an integer number (156954240).

Almost surely, 2^5621623568 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 5621623568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6278169600).

5621623568 is an abundant number, since it is smaller than the sum of its proper divisors (6934715632).

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

5621623568 is a wasteful number, since it uses less digits than its factorization.

5621623568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17700 (or 17694 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 5621623568 is about 74977.4870744546. The cubic root of 5621623568 is about 1778.0907407749.

The spelling of 5621623568 in words is "five billion, six hundred twenty-one million, six hundred twenty-three thousand, five hundred sixty-eight".