6504065 has 4 divisors (see below), whose sum is σ = 7804884. Its totient is φ = 5203248.

The previous prime is 6504059. The next prime is 6504067. The reversal of 6504065 is 5604056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1540081 + 4963984 = 1241^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 6504065 - 2⁴ = 6504049 is a prime.

It is a Duffinian number.

6504065 is a modest number, since divided by 4065 gives 65 as remainder.

It is not an unprimeable number, because it can be changed into a prime (6504067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650402 + ... + 650411.

It is an arithmetic number, because the mean of its divisors is an integer number (1951221).

Almost surely, 2^6504065 is an apocalyptic number.

It is an amenable number.

6504065 is a deficient number, since it is larger than the sum of its proper divisors (1300819).

6504065 is a wasteful number, since it uses less digits than its factorization.

6504065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300818.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 6504065 is about 2550.3068442836. The cubic root of 6504065 is about 186.6644539845.

Subtracting from 6504065 its reverse (5604056), we obtain a palindrome (900009).

The spelling of 6504065 in words is "six million, five hundred four thousand, sixty-five".