872771 has 4 divisors (see below), whose sum is σ = 893112. Its totient is φ = 852432.

The previous prime is 872761. The next prime is 872789. The reversal of 872771 is 177278.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-872771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10106 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (223278).

2⁸⁷²⁷⁷¹ is an apocalyptic number.

872771 is a deficient number, since it is larger than the sum of its proper divisors (20341).

872771 is a wasteful number, since it uses less digits than its factorization.

872771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340.

The product of its digits is 5488, while the sum is 32.

The square root of 872771 is about 934.2221363252. Note that the first 3 decimals coincide. The cubic root of 872771 is about 95.5652724830.

It can be divided in two parts, 87277 and 1, that added together give a palindrome (87278).

The spelling of 872771 in words is "eight hundred seventy-two thousand, seven hundred seventy-one".