6599538720 has 384 divisors, whose sum is σ = 24812282880. Its totient is φ = 1632337920.

The previous prime is 6599538713. The next prime is 6599538721. The reversal of 6599538720 is 278359956.

It is a super-2 number, since 2×6599538720² = 87107822633558476800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (6599538721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5360505 + ... + 5361735.

It is an arithmetic number, because the mean of its divisors is an integer number (64615320).

Almost surely, 2^6599538720 is an apocalyptic number.

6599538720 is a gapful number since it is divisible by the number (60) 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 6599538720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12406141440).

6599538720 is an abundant number, since it is smaller than the sum of its proper divisors (18212744160).

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

6599538720 is a wasteful number, since it uses less digits than its factorization.

6599538720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The square root of 6599538720 is about 81237.5450146052. The cubic root of 6599538720 is about 1875.7337544183.

The spelling of 6599538720 in words is "six billion, five hundred ninety-nine million, five hundred thirty-eight thousand, seven hundred twenty".