868611111 has 4 divisors (see below), whose sum is σ = 1158148152. Its totient is φ = 579074072.

The previous prime is 868611101. The next prime is 868611119. The reversal of 868611111 is 111116868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868611111 - 2⁷ = 868610983 is a prime.

868611111 is a modest number, since divided by 11111 gives 8686 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868611119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144768516 + ... + 144768521.

It is an arithmetic number, because the mean of its divisors is an integer number (289537038).

Almost surely, 2^868611111 is an apocalyptic number.

868611111 is a deficient number, since it is larger than the sum of its proper divisors (289537041).

868611111 is a wasteful number, since it uses less digits than its factorization.

868611111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289537040.

The product of its digits is 2304, while the sum is 33.

The square root of 868611111 is about 29472.2091299583. The cubic root of 868611111 is about 954.1319967757.

Adding to 868611111 its reverse (111116868), we get a palindrome (979727979).

The spelling of 868611111 in words is "eight hundred sixty-eight million, six hundred eleven thousand, one hundred eleven".