8713685663 has 2 divisors, whose sum is σ = 8713685664. Its totient is φ = 8713685662.

The previous prime is 8713685609. The next prime is 8713685689. The reversal of 8713685663 is 3665863178.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8713685663 - 2⁶ = 8713685599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8713681663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4356842831 + 4356842832.

It is an arithmetic number, because the mean of its divisors is an integer number (4356842832).

Almost surely, 2^8713685663 is an apocalyptic number.

8713685663 is a deficient number, since it is larger than the sum of its proper divisors (1).

8713685663 is an equidigital number, since it uses as much as digits as its factorization.

8713685663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 53.

The square root of 8713685663 is about 93347.1245566782. The cubic root of 8713685663 is about 2057.7879972472.

The spelling of 8713685663 in words is "eight billion, seven hundred thirteen million, six hundred eighty-five thousand, six hundred sixty-three".