6504787361 has 8 divisors (see below), whose sum is σ = 6629178024. Its totient is φ = 6380458240.

The previous prime is 6504787349. The next prime is 6504787363. The reversal of 6504787361 is 1637874056.

It can be written as a sum of positive squares in 4 ways, for example, as 559606336 + 5945181025 = 23656^2 + 77105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6504787361 is a prime.

It is a super-2 number, since 2×6504787361² = 84624517223650688642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6504787363) 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 7 ways as a sum of consecutive naturals, for example, 237215 + ... + 263211.

It is an arithmetic number, because the mean of its divisors is an integer number (828647253).

Almost surely, 2^6504787361 is an apocalyptic number.

It is an amenable number.

6504787361 is a deficient number, since it is larger than the sum of its proper divisors (124390663).

6504787361 is a wasteful number, since it uses less digits than its factorization.

6504787361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30771.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 6504787361 is about 80652.2619707594. The cubic root of 6504787361 is about 1866.7136423375.

The spelling of 6504787361 in words is "six billion, five hundred four million, seven hundred eighty-seven thousand, three hundred sixty-one".