871368621 has 8 divisors (see below), whose sum is σ = 1170183840. Its totient is φ = 576732912.

The previous prime is 871368569. The next prime is 871368623. The reversal of 871368621 is 126863178.

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

It is not a de Polignac number, because 871368621 - 2⁷ = 871368493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871368623) 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, 1044390 + ... + 1045223.

It is an arithmetic number, because the mean of its divisors is an integer number (146272980).

Almost surely, 2^871368621 is an apocalyptic number.

It is an amenable number.

871368621 is a deficient number, since it is larger than the sum of its proper divisors (298815219).

871368621 is a wasteful number, since it uses less digits than its factorization.

871368621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089755.

The product of its digits is 96768, while the sum is 42.

The square root of 871368621 is about 29518.9535891772. The cubic root of 871368621 is about 955.1405989827.

The spelling of 871368621 in words is "eight hundred seventy-one million, three hundred sixty-eight thousand, six hundred twenty-one".