6565197140 has 24 divisors (see below), whose sum is σ = 13941826920. Its totient is φ = 2596571648.

The previous prime is 6565197137. The next prime is 6565197169. The reversal of 6565197140 is 417915656.

It can be written as a sum of positive squares in 4 ways, for example, as 113252164 + 6451944976 = 10642^2 + 80324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6565197091 and 6565197100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842377 + ... + 1845936.

It is an arithmetic number, because the mean of its divisors is an integer number (580909455).

Almost surely, 2^6565197140 is an apocalyptic number.

It is an amenable number.

6565197140 is an abundant number, since it is smaller than the sum of its proper divisors (7376629780).

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

6565197140 is a wasteful number, since it uses less digits than its factorization.

6565197140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688411 (or 3688409 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 6565197140 is about 81025.9041294819. The cubic root of 6565197140 is about 1872.4745510364.

The spelling of 6565197140 in words is "six billion, five hundred sixty-five million, one hundred ninety-seven thousand, one hundred forty".