8085617987 has 2 divisors, whose sum is σ = 8085617988. Its totient is φ = 8085617986.

The previous prime is 8085617983. The next prime is 8085618041. The reversal of 8085617987 is 7897165808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8085617987 - 2² = 8085617983 is a prime.

It is not a weakly prime, because it can be changed into another prime (8085617983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4042808993 + 4042808994.

It is an arithmetic number, because the mean of its divisors is an integer number (4042808994).

Almost surely, 2^8085617987 is an apocalyptic number.

8085617987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8085617987 is an equidigital number, since it uses as much as digits as its factorization.

8085617987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 59.

The square root of 8085617987 is about 89920.0644294698. The cubic root of 8085617987 is about 2007.1095295983.

The spelling of 8085617987 in words is "eight billion, eighty-five million, six hundred seventeen thousand, nine hundred eighty-seven".