6564724488 has 256 divisors, whose sum is σ = 22251110400. Its totient is φ = 1750533120.

The previous prime is 6564724433. The next prime is 6564724493. The reversal of 6564724488 is 8844274656.

It is a happy number.

6564724488 is a `hidden beast` number, since 6 + 56 + 472 + 44 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3263403 + ... + 3265413.

It is an arithmetic number, because the mean of its divisors is an integer number (86918400).

Almost surely, 2^6564724488 is an apocalyptic number.

6564724488 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6564724488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11125555200).

6564724488 is an abundant number, since it is smaller than the sum of its proper divisors (15686385912).

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

6564724488 is a wasteful number, since it uses less digits than its factorization.

6564724488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2167 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 54.

The square root of 6564724488 is about 81022.9874048100. The cubic root of 6564724488 is about 1872.4296145802.

The spelling of 6564724488 in words is "six billion, five hundred sixty-four million, seven hundred twenty-four thousand, four hundred eighty-eight".