868555163 has 4 divisors (see below), whose sum is σ = 992634480. Its totient is φ = 744475848.

The previous prime is 868555157. The next prime is 868555199. The reversal of 868555163 is 361555868.

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 868555163 - 2¹² = 868551067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868555153) 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, 62039648 + ... + 62039661.

It is an arithmetic number, because the mean of its divisors is an integer number (248158620).

Almost surely, 2^868555163 is an apocalyptic number.

868555163 is a deficient number, since it is larger than the sum of its proper divisors (124079317).

868555163 is a wasteful number, since it uses less digits than its factorization.

868555163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124079316.

The product of its digits is 864000, while the sum is 47.

The square root of 868555163 is about 29471.2599493133. The cubic root of 868555163 is about 954.1115108443. Note that the first 3 decimals are identical.

The spelling of 868555163 in words is "eight hundred sixty-eight million, five hundred fifty-five thousand, one hundred sixty-three".