6564306845 has 8 divisors (see below), whose sum is σ = 8069294520. Its totient is φ = 5123361280.

The previous prime is 6564306821. The next prime is 6564306869. The reversal of 6564306845 is 5486034656.

It is a happy number.

6564306845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6564306821) and next prime (6564306869).

It can be written as a sum of positive squares in 4 ways, for example, as 333099001 + 6231207844 = 18251^2 + 78938^2 .

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

It is not a de Polignac number, because 6564306845 - 2¹⁰ = 6564305821 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6564306845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16010300 + ... + 16010709.

It is an arithmetic number, because the mean of its divisors is an integer number (1008661815).

Almost surely, 2^6564306845 is an apocalyptic number.

It is an amenable number.

6564306845 is a deficient number, since it is larger than the sum of its proper divisors (1504987675).

6564306845 is a wasteful number, since it uses less digits than its factorization.

6564306845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32021055.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The square root of 6564306845 is about 81020.4100520357. The cubic root of 6564306845 is about 1872.3899062011.

The spelling of 6564306845 in words is "six billion, five hundred sixty-four million, three hundred six thousand, eight hundred forty-five".