6511065 has 16 divisors (see below), whose sum is σ = 11365056. Its totient is φ = 3156800.

The previous prime is 6511049. The next prime is 6511073. The reversal of 6511065 is 5601156.

It is not a de Polignac number, because 6511065 - 2⁴ = 6511049 is a prime.

6511065 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19566 + ... + 19895.

It is an arithmetic number, because the mean of its divisors is an integer number (710316).

Almost surely, 2^6511065 is an apocalyptic number.

It is an amenable number.

6511065 is a deficient number, since it is larger than the sum of its proper divisors (4853991).

6511065 is a wasteful number, since it uses less digits than its factorization.

6511065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39480.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 6511065 is about 2551.6788591043. The cubic root of 6511065 is about 186.7313958482.

Subtracting from 6511065 its reverse (5601156), we obtain a palindrome (909909).

The spelling of 6511065 in words is "six million, five hundred eleven thousand, sixty-five".