8687944361 has 2 divisors, whose sum is σ = 8687944362. Its totient is φ = 8687944360.

The previous prime is 8687944327. The next prime is 8687944393. The reversal of 8687944361 is 1634497868.

8687944361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7565694361 + 1122250000 = 86981^2 + 33500^2 .

It is a cyclic number.

It is not a de Polignac number, because 8687944361 - 2²⁶ = 8620835497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8687944297 and 8687944306.

It is not a weakly prime, because it can be changed into another prime (8687944301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4343972180 + 4343972181.

It is an arithmetic number, because the mean of its divisors is an integer number (4343972181).

Almost surely, 2^8687944361 is an apocalyptic number.

It is an amenable number.

8687944361 is a deficient number, since it is larger than the sum of its proper divisors (1).

8687944361 is an equidigital number, since it uses as much as digits as its factorization.

8687944361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 56.

The square root of 8687944361 is about 93209.1431191168. The cubic root of 8687944361 is about 2055.7596787979.

The spelling of 8687944361 in words is "eight billion, six hundred eighty-seven million, nine hundred forty-four thousand, three hundred sixty-one".