8475718687 has 4 divisors (see below), whose sum is σ = 8481947616. Its totient is φ = 8469489760.

The previous prime is 8475718681. The next prime is 8475718697. The reversal of 8475718687 is 7868175748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8475718687 is a prime.

It is a super-2 number, since 2×8475718687² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8475718681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3112423 + ... + 3115144.

It is an arithmetic number, because the mean of its divisors is an integer number (2120486904).

Almost surely, 2^8475718687 is an apocalyptic number.

8475718687 is a deficient number, since it is larger than the sum of its proper divisors (6228929).

8475718687 is a wasteful number, since it uses less digits than its factorization.

8475718687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228928.

The product of its digits is 21073920, while the sum is 61.

The square root of 8475718687 is about 92063.6664868394. Note that the first 3 decimals coincide. The cubic root of 8475718687 is about 2038.8824045556.

The spelling of 8475718687 in words is "eight billion, four hundred seventy-five million, seven hundred eighteen thousand, six hundred eighty-seven".