8713685691 has 12 divisors (see below), whose sum is σ = 12589218720. Its totient is φ = 5807838960.

The previous prime is 8713685689. The next prime is 8713685707. The reversal of 8713685691 is 1965863178.

8713685691 is a `hidden beast` number, since 8 + 7 + 13 + 68 + 569 + 1 = 666.

It is not a de Polignac number, because 8713685691 - 2¹ = 8713685689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8713685791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63171 + ... + 146348.

It is an arithmetic number, because the mean of its divisors is an integer number (1049101560).

Almost surely, 2^8713685691 is an apocalyptic number.

8713685691 is a deficient number, since it is larger than the sum of its proper divisors (3875533029).

8713685691 is a wasteful number, since it uses less digits than its factorization.

8713685691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214146 (or 214143 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 8713685691 is about 93347.1247066561. The cubic root of 8713685691 is about 2057.7879994513.

The spelling of 8713685691 in words is "eight billion, seven hundred thirteen million, six hundred eighty-five thousand, six hundred ninety-one".