6504665573 has 12 divisors (see below), whose sum is σ = 7576690572. Its totient is φ = 5568030720.

The previous prime is 6504665543. The next prime is 6504665593. The reversal of 6504665573 is 3755664056.

It can be written as a sum of positive squares in 2 ways, for example, as 5184288004 + 1320377569 = 72002^2 + 36337^2 .

It is not a de Polignac number, because 6504665573 - 2⁶ = 6504665509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6504665543) 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 11 ways as a sum of consecutive naturals, for example, 50588 + ... + 124773.

It is an arithmetic number, because the mean of its divisors is an integer number (631390881).

Almost surely, 2^6504665573 is an apocalyptic number.

It is an amenable number.

6504665573 is a deficient number, since it is larger than the sum of its proper divisors (1072024999).

6504665573 is a wasteful number, since it uses less digits than its factorization.

6504665573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176132 (or 176125 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 47.

The square root of 6504665573 is about 80651.5069481036. The cubic root of 6504665573 is about 1866.7019922134.

The spelling of 6504665573 in words is "six billion, five hundred four million, six hundred sixty-five thousand, five hundred seventy-three".