8718607881 has 16 divisors (see below), whose sum is σ = 13596270400. Its totient is φ = 5506488864.

The previous prime is 8718607873. The next prime is 8718607897. The reversal of 8718607881 is 1887068178.

It is a happy number.

It is not a de Polignac number, because 8718607881 - 2³ = 8718607873 is a prime.

It is a super-2 number, since 2×8718607881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8718607871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8497156 + ... + 8498181.

It is an arithmetic number, because the mean of its divisors is an integer number (849766900).

Almost surely, 2^8718607881 is an apocalyptic number.

It is an amenable number.

8718607881 is a deficient number, since it is larger than the sum of its proper divisors (4877662519).

8718607881 is a wasteful number, since it uses less digits than its factorization.

8718607881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16995365 (or 16995359 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 54.

The square root of 8718607881 is about 93373.4859636289. The cubic root of 8718607881 is about 2058.1753945322.

The spelling of 8718607881 in words is "eight billion, seven hundred eighteen million, six hundred seven thousand, eight hundred eighty-one".