6530865 has 16 divisors (see below), whose sum is σ = 11399616. Its totient is φ = 3166400.

The previous prime is 6530861. The next prime is 6530879. The reversal of 6530865 is 5680356.

6530865 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6530865 - 2² = 6530861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6530861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19626 + ... + 19955.

It is an arithmetic number, because the mean of its divisors is an integer number (712476).

Almost surely, 2^6530865 is an apocalyptic number.

It is an amenable number.

6530865 is a deficient number, since it is larger than the sum of its proper divisors (4868751).

6530865 is a wasteful number, since it uses less digits than its factorization.

6530865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39600.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6530865 is about 2555.5557125604. Note that the first 3 decimals coincide. The cubic root of 6530865 is about 186.9204862747.

Adding to 6530865 its reverse (5680356), we get a palindrome (12211221).

The spelling of 6530865 in words is "six million, five hundred thirty thousand, eight hundred sixty-five".