8664867871 has 16 divisors (see below), whose sum is σ = 9558132768. Its totient is φ = 7789392000.

The previous prime is 8664867859. The next prime is 8664867923. The reversal of 8664867871 is 1787684668.

It is a cyclic number.

It is not a de Polignac number, because 8664867871 - 2⁵ = 8664867839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664867851) 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, 969901 + ... + 978793.

It is an arithmetic number, because the mean of its divisors is an integer number (597383298).

Almost surely, 2^8664867871 is an apocalyptic number.

8664867871 is a deficient number, since it is larger than the sum of its proper divisors (893264897).

8664867871 is a wasteful number, since it uses less digits than its factorization.

8664867871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9882.

The product of its digits is 21676032, while the sum is 61.

The square root of 8664867871 is about 93085.2720412848. The cubic root of 8664867871 is about 2053.9379290209.

The spelling of 8664867871 in words is "eight billion, six hundred sixty-four million, eight hundred sixty-seven thousand, eight hundred seventy-one".