8687447868 has 24 divisors (see below), whose sum is σ = 22113504000. Its totient is φ = 2632559920.

The previous prime is 8687447863. The next prime is 8687447897.

8687447868 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 8687447799 and 8687447808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687447863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32906868 + ... + 32907131.

It is an arithmetic number, because the mean of its divisors is an integer number (921396000).

Almost surely, 2^8687447868 is an apocalyptic number.

It is an amenable number.

8687447868 is an abundant number, since it is smaller than the sum of its proper divisors (13426056132).

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

8687447868 is a wasteful number, since it uses less digits than its factorization.

8687447868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65814017 (or 65814015 counting only the distinct ones).

The product of its digits is 115605504, while the sum is 66.

The square root of 8687447868 is about 93206.4797532875. The cubic root of 8687447868 is about 2055.7205176458.

The spelling of 8687447868 in words is "eight billion, six hundred eighty-seven million, four hundred forty-seven thousand, eight hundred sixty-eight".