868158211 has 4 divisors (see below), whose sum is σ = 871248024. Its totient is φ = 865068400.

The previous prime is 868158209. The next prime is 868158217. The reversal of 868158211 is 112851868.

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 868158211 - 2¹ = 868158209 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868158217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544485 + ... + 1545046.

It is an arithmetic number, because the mean of its divisors is an integer number (217812006).

Almost surely, 2^868158211 is an apocalyptic number.

868158211 is a deficient number, since it is larger than the sum of its proper divisors (3089813).

868158211 is a wasteful number, since it uses less digits than its factorization.

868158211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089812.

The product of its digits is 30720, while the sum is 40.

The square root of 868158211 is about 29464.5246185985. The cubic root of 868158211 is about 953.9661375467.

The spelling of 868158211 in words is "eight hundred sixty-eight million, one hundred fifty-eight thousand, two hundred eleven".