871623847 has 16 divisors (see below), whose sum is σ = 964472832. Its totient is φ = 783502720.

The previous prime is 871623811. The next prime is 871623887. The reversal of 871623847 is 748326178.

It is a cyclic number.

It is not a de Polignac number, because 871623847 - 2⁷ = 871623719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 871623797 and 871623806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871623887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354978 + ... + 357424.

It is an arithmetic number, because the mean of its divisors is an integer number (60279552).

Almost surely, 2^871623847 is an apocalyptic number.

871623847 is a deficient number, since it is larger than the sum of its proper divisors (92848985).

871623847 is a wasteful number, since it uses less digits than its factorization.

871623847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398.

The product of its digits is 451584, while the sum is 46.

The square root of 871623847 is about 29523.2763595100. The cubic root of 871623847 is about 955.2338442185.

The spelling of 871623847 in words is "eight hundred seventy-one million, six hundred twenty-three thousand, eight hundred forty-seven".