871863147 has 24 divisors (see below), whose sum is σ = 1269057504. Its totient is φ = 576785664.

The previous prime is 871863143. The next prime is 871863199. The reversal of 871863147 is 741368178.

871863147 is a `hidden beast` number, since 8 + 7 + 1 + 8 + 631 + 4 + 7 = 666.

It is not a de Polignac number, because 871863147 - 2² = 871863143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (871863143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 797133 + ... + 798225.

It is an arithmetic number, because the mean of its divisors is an integer number (52877396).

Almost surely, 2^871863147 is an apocalyptic number.

871863147 is a deficient number, since it is larger than the sum of its proper divisors (397194357).

871863147 is a wasteful number, since it uses less digits than its factorization.

871863147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699 (or 1696 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 871863147 is about 29527.3288158614. The cubic root of 871863147 is about 955.3212544562.

The spelling of 871863147 in words is "eight hundred seventy-one million, eight hundred sixty-three thousand, one hundred forty-seven".