6515864 has 16 divisors (see below), whose sum is σ = 12247800. Its totient is φ = 3249792.

The previous prime is 6515863. The next prime is 6515867. The reversal of 6515864 is 4685156.

It is a happy number.

6515864 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515863) 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, 3632 + ... + 5120.

Almost surely, 2^6515864 is an apocalyptic number.

It is an amenable number.

6515864 is a deficient number, since it is larger than the sum of its proper divisors (5731936).

6515864 is a wasteful number, since it uses less digits than its factorization.

6515864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042 (or 2038 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 6515864 is about 2552.6190471749. The cubic root of 6515864 is about 186.7772615601. Note that the first 3 decimals are identical.

The spelling of 6515864 in words is "six million, five hundred fifteen thousand, eight hundred sixty-four".