6535323648 has 504 divisors, whose sum is σ = 23114184912. Its totient is φ = 1839366144.

The previous prime is 6535323647. The next prime is 6535323649. The reversal of 6535323648 is 8463235356.

6535323648 is a `hidden beast` number, since 6 + 53 + 532 + 3 + 64 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6535323647) and next prime (6535323649).

It is a tau number, because it is divible by the number of its divisors (504).

It is not an unprimeable number, because it can be changed into a prime (6535323647) 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, 97542111 + ... + 97542177.

It is an arithmetic number, because the mean of its divisors is an integer number (45861478).

Almost surely, 2^6535323648 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 6535323648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11557092456).

6535323648 is an abundant number, since it is smaller than the sum of its proper divisors (16578861264).

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

6535323648 is an frugal number, since it uses more digits than its factorization.

6535323648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 79 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The square root of 6535323648 is about 80841.3486280381. The cubic root of 6535323648 is about 1869.6301372274.

The spelling of 6535323648 in words is "six billion, five hundred thirty-five million, three hundred twenty-three thousand, six hundred forty-eight".