872806 has 16 divisors (see below), whose sum is σ = 1446480. Its totient is φ = 391680.

The previous prime is 872791. The next prime is 872843. The reversal of 872806 is 608278.

872806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

872806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (90405).

2⁸⁷²⁸⁰⁶ is an apocalyptic number.

872806 is a deficient number, since it is larger than the sum of its proper divisors (573674).

872806 is a wasteful number, since it uses less digits than its factorization.

872806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 872806 is about 934.2408682990. The cubic root of 872806 is about 95.5665499238.

The spelling of 872806 in words is "eight hundred seventy-two thousand, eight hundred six".