6520347792 has 240 divisors, whose sum is σ = 21699325440. Its totient is φ = 1788853248.

The previous prime is 6520347749. The next prime is 6520347853. The reversal of 6520347792 is 2977430256.

6520347792 is a `hidden beast` number, since 6 + 520 + 34 + 7 + 7 + 92 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2945278 + ... + 2947490.

It is an arithmetic number, because the mean of its divisors is an integer number (90413856).

Almost surely, 2^6520347792 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 6520347792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10849662720).

6520347792 is an abundant number, since it is smaller than the sum of its proper divisors (15178977648).

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

6520347792 is a wasteful number, since it uses less digits than its factorization.

6520347792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 6520347792 is about 80748.6705277554. The cubic root of 6520347792 is about 1868.2009437385.

The spelling of 6520347792 in words is "six billion, five hundred twenty million, three hundred forty-seven thousand, seven hundred ninety-two".