868660881 has 8 divisors (see below), whose sum is σ = 1263506784. Its totient is φ = 526461120.

The previous prime is 868660873. The next prime is 868660907. The reversal of 868660881 is 188066868.

It is a happy number.

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

It is not a de Polignac number, because 868660881 - 2³ = 868660873 is a prime.

It is a super-2 number, since 2×868660881² = 1509143452359392322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (868660861) 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, 13161496 + ... + 13161561.

It is an arithmetic number, because the mean of its divisors is an integer number (157938348).

Almost surely, 2^868660881 is an apocalyptic number.

It is an amenable number.

868660881 is a deficient number, since it is larger than the sum of its proper divisors (394845903).

868660881 is a wasteful number, since it uses less digits than its factorization.

868660881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26323071.

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 868660881 is about 29473.0534726214. The cubic root of 868660881 is about 954.1502198301.

The spelling of 868660881 in words is "eight hundred sixty-eight million, six hundred sixty thousand, eight hundred eighty-one".