871846 has 4 divisors (see below), whose sum is σ = 1307772. Its totient is φ = 435922.

The previous prime is 871837. The next prime is 871867. The reversal of 871846 is 648178.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648178 = 2 ⋅324089.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217960 + ... + 217963.

It is an arithmetic number, because the mean of its divisors is an integer number (326943).

2⁸⁷¹⁸⁴⁶ is an apocalyptic number.

871846 is a deficient number, since it is larger than the sum of its proper divisors (435926).

871846 is a wasteful number, since it uses less digits than its factorization.

871846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435925.

The product of its digits is 10752, while the sum is 34.

The square root of 871846 is about 933.7269408130. The cubic root of 871846 is about 95.5314991623.

The spelling of 871846 in words is "eight hundred seventy-one thousand, eight hundred forty-six".