6565875997 has 8 divisors (see below), whose sum is σ = 6778985472. Its totient is φ = 6355288800.

The previous prime is 6565875991. The next prime is 6565876001. The reversal of 6565875997 is 7995785656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6565875997 - 2²³ = 6557487389 is a prime.

It is a super-3 number, since 3×6565875997³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6565875991) 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 7 ways as a sum of consecutive naturals, for example, 625279 + ... + 635692.

It is an arithmetic number, because the mean of its divisors is an integer number (847373184).

Almost surely, 2^6565875997 is an apocalyptic number.

It is an amenable number.

6565875997 is a deficient number, since it is larger than the sum of its proper divisors (213109475).

6565875997 is a wasteful number, since it uses less digits than its factorization.

6565875997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261139.

The product of its digits is 142884000, while the sum is 67.

The square root of 6565875997 is about 81030.0931568019. The cubic root of 6565875997 is about 1872.5390882528.

The spelling of 6565875997 in words is "six billion, five hundred sixty-five million, eight hundred seventy-five thousand, nine hundred ninety-seven".