6565523660 has 12 divisors (see below), whose sum is σ = 13787599728. Its totient is φ = 2626209456.

The previous prime is 6565523593. The next prime is 6565523669. The reversal of 6565523660 is 663255656.

It is a super-2 number, since 2×6565523660² = 86212201860039591200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6565523669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164138072 + ... + 164138111.

It is an arithmetic number, because the mean of its divisors is an integer number (1148966644).

Almost surely, 2^6565523660 is an apocalyptic number.

It is an amenable number.

6565523660 is an abundant number, since it is smaller than the sum of its proper divisors (7222076068).

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

6565523660 is a wasteful number, since it uses less digits than its factorization.

6565523660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328276192 (or 328276190 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 44.

The square root of 6565523660 is about 81027.9190156084. The cubic root of 6565523660 is about 1872.5055930215.

The spelling of 6565523660 in words is "six billion, five hundred sixty-five million, five hundred twenty-three thousand, six hundred sixty".