6565897008 has 120 divisors (see below), whose sum is σ = 20097816336. Its totient is φ = 1984512000.

The previous prime is 6565897007. The next prime is 6565897043. The reversal of 6565897008 is 8007985656.

6565897008 is a `hidden beast` number, since 6 + 56 + 589 + 7 + 0 + 0 + 8 = 666.

It is a super-2 number, since 2×6565897008² = 86222007039326704128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6565897001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630016 + ... + 640352.

Almost surely, 2^6565897008 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 6565897008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10048908168).

6565897008 is an abundant number, since it is smaller than the sum of its proper divisors (13531919328).

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

6565897008 is a wasteful number, since it uses less digits than its factorization.

6565897008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10763 (or 10754 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The square root of 6565897008 is about 81030.2228060617. Note that the first 3 decimals coincide. The cubic root of 6565897008 is about 1872.5410856444.

The spelling of 6565897008 in words is "six billion, five hundred sixty-five million, eight hundred ninety-seven thousand, eight".