8871599681 has 8 divisors (see below), whose sum is σ = 10672601280. Its totient is φ = 7204005648.

The previous prime is 8871599647. The next prime is 8871599689. The reversal of 8871599681 is 1869951788.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8871599681 - 2¹⁰ = 8871598657 is a prime.

It is a super-2 number, since 2×8871599681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8871599689) 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, 33351746 + ... + 33352011.

It is an arithmetic number, because the mean of its divisors is an integer number (1334075160).

Almost surely, 2^8871599681 is an apocalyptic number.

It is an amenable number.

8871599681 is a deficient number, since it is larger than the sum of its proper divisors (1801001599).

8871599681 is a wasteful number, since it uses less digits than its factorization.

8871599681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66703783.

The product of its digits is 8709120, while the sum is 62.

The square root of 8871599681 is about 94189.1696587246. The cubic root of 8871599681 is about 2070.1444258881.

The spelling of 8871599681 in words is "eight billion, eight hundred seventy-one million, five hundred ninety-nine thousand, six hundred eighty-one".