8716486321 has 2 divisors, whose sum is σ = 8716486322. Its totient is φ = 8716486320.

The previous prime is 8716486309. The next prime is 8716486327. The reversal of 8716486321 is 1236846178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5199996321 + 3516490000 = 72111^2 + 59300^2 .

It is a cyclic number.

It is not a de Polignac number, because 8716486321 - 2⁷ = 8716486193 is a prime.

It is not a weakly prime, because it can be changed into another prime (8716486327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4358243160 + 4358243161.

It is an arithmetic number, because the mean of its divisors is an integer number (4358243161).

Almost surely, 2^8716486321 is an apocalyptic number.

It is an amenable number.

8716486321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8716486321 is an equidigital number, since it uses as much as digits as its factorization.

8716486321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 8716486321 is about 93362.1246598427. The cubic root of 8716486321 is about 2058.0084375716.

It can be divided in two parts, 871648 and 6321, that added together give a square (877969 = 937²).

The spelling of 8716486321 in words is "eight billion, seven hundred sixteen million, four hundred eighty-six thousand, three hundred twenty-one".