8236560641 has 4 divisors (see below), whose sum is σ = 8238557652. Its totient is φ = 8234563632.

The previous prime is 8236560611. The next prime is 8236560677. The reversal of 8236560641 is 1460656328.

8236560641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3185473600 + 5051087041 = 56440^2 + 71071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8236560641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8236560611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 992306 + ... + 1000571.

It is an arithmetic number, because the mean of its divisors is an integer number (2059639413).

Almost surely, 2^8236560641 is an apocalyptic number.

It is an amenable number.

8236560641 is a deficient number, since it is larger than the sum of its proper divisors (1997011).

8236560641 is a wasteful number, since it uses less digits than its factorization.

8236560641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997010.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 8236560641 is about 90755.4992328289. The cubic root of 8236560641 is about 2019.5222084194.

The spelling of 8236560641 in words is "eight billion, two hundred thirty-six million, five hundred sixty thousand, six hundred forty-one".