8687385986 has 16 divisors (see below), whose sum is σ = 13599732600. Its totient is φ = 4156793088.

The previous prime is 8687385937. The next prime is 8687386003. The reversal of 8687385986 is 6895837868.

8687385986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5879975761 + 2807410225 = 76681^2 + 52985^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656201 + ... + 669308.

Almost surely, 2^8687385986 is an apocalyptic number.

8687385986 is a deficient number, since it is larger than the sum of its proper divisors (4912346614).

8687385986 is a wasteful number, since it uses less digits than its factorization.

8687385986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325653.

The product of its digits is 139345920, while the sum is 68.

The square root of 8687385986 is about 93206.1477907976. The cubic root of 8687385986 is about 2055.7156365652.

The spelling of 8687385986 in words is "eight billion, six hundred eighty-seven million, three hundred eighty-five thousand, nine hundred eighty-six".