8720304871 has 4 divisors (see below), whose sum is σ = 8721014832. Its totient is φ = 8719594912.

The previous prime is 8720304821. The next prime is 8720304877. The reversal of 8720304871 is 1784030278.

8720304871 is digitally balanced in base 2, 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 is a cyclic number.

It is not a de Polignac number, because 8720304871 - 2²³ = 8711916263 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 (8720304877) 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 3 ways as a sum of consecutive naturals, for example, 336226 + ... + 361231.

It is an arithmetic number, because the mean of its divisors is an integer number (2180253708).

Almost surely, 2^8720304871 is an apocalyptic number.

8720304871 is a deficient number, since it is larger than the sum of its proper divisors (709961).

8720304871 is a wasteful number, since it uses less digits than its factorization.

8720304871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709960.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 8720304871 is about 93382.5726300149. The cubic root of 8720304871 is about 2058.3089203018.

The spelling of 8720304871 in words is "eight billion, seven hundred twenty million, three hundred four thousand, eight hundred seventy-one".