872685 has 48 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 403200.

The previous prime is 872671. The next prime is 872687. The reversal of 872685 is 586278.

It is not a de Polignac number, because 872685 - 2⁶ = 872621 is a prime.

It is a Curzon number.

872685 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872685.

It is not an unprimeable number, because it can be changed into a prime (872687) 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 47 ways as a sum of consecutive naturals, for example, 20274 + ... + 20316.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2⁸⁷²⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

872685 is a deficient number, since it is larger than the sum of its proper divisors (857043).

872685 is a wasteful number, since it uses less digits than its factorization.

872685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 103 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 872685 is about 934.1761075943. The cubic root of 872685 is about 95.5621334834.

It can be divided in two parts, 87 and 2685, that added together give a palindrome (2772).

The spelling of 872685 in words is "eight hundred seventy-two thousand, six hundred eighty-five".