871877 has 4 divisors (see below), whose sum is σ = 876876. Its totient is φ = 866880.

The previous prime is 871867. The next prime is 871883. The reversal of 871877 is 778178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778178 = 2 ⋅389089.

It can be written as a sum of positive squares in 2 ways, for example, as 36481 + 835396 = 191^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 871877 - 2⁸ = 871621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 871877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871817) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2228 + ... + 2589.

It is an arithmetic number, because the mean of its divisors is an integer number (219219).

2⁸⁷¹⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

871877 is a deficient number, since it is larger than the sum of its proper divisors (4999).

871877 is a wasteful number, since it uses less digits than its factorization.

871877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998.

The product of its digits is 21952, while the sum is 38.

The square root of 871877 is about 933.7435408076. The cubic root of 871877 is about 95.5326314117.

The spelling of 871877 in words is "eight hundred seventy-one thousand, eight hundred seventy-seven".