6520082688 has 756 divisors, whose sum is σ = 24449902848. Its totient is φ = 1724405760.

The previous prime is 6520082671. The next prime is 6520082713. The reversal of 6520082688 is 8862800256.

It is a tau number, because it is divible by the number of its divisors (756).

It is a super-2 number, since 2×6520082688² = 85022956516714610688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 210325233 + ... + 210325263.

Almost surely, 2^6520082688 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 6520082688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12224951424).

6520082688 is an abundant number, since it is smaller than the sum of its proper divisors (17929820160).

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

6520082688 is an equidigital number, since it uses as much as digits as its factorization.

6520082688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 6520082688 is about 80747.0289732074. The cubic root of 6520082688 is about 1868.1756243194.

The spelling of 6520082688 in words is "six billion, five hundred twenty million, eighty-two thousand, six hundred eighty-eight".