8387687172 has 24 divisors (see below), whose sum is σ = 19577880000. Its totient is φ = 2794951456.

The previous prime is 8387687159. The next prime is 8387687179. The reversal of 8387687172 is 2717867838.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8387687179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80547 + ... + 152522.

It is an arithmetic number, because the mean of its divisors is an integer number (815745000).

Almost surely, 2^8387687172 is an apocalyptic number.

It is an amenable number.

8387687172 is an abundant number, since it is smaller than the sum of its proper divisors (11190192828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8387687172 is a wasteful number, since it uses less digits than its factorization.

8387687172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236075 (or 236073 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The square root of 8387687172 is about 91584.3172819452. The cubic root of 8387687172 is about 2031.7989967052.

The spelling of 8387687172 in words is "eight billion, three hundred eighty-seven million, six hundred eighty-seven thousand, one hundred seventy-two".