872081 has 16 divisors (see below), whose sum is σ = 1075200. Its totient is φ = 690768.

The previous prime is 872077. The next prime is 872089. The reversal of 872081 is 180278.

872081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 872081 - 2² = 872077 is a prime.

It is a super-2 number, since 2×872081² = 1521050541122, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 872081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10466 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2⁸⁷²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

872081 is a deficient number, since it is larger than the sum of its proper divisors (203119).

872081 is a wasteful number, since it uses less digits than its factorization.

872081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 872081 is about 933.8527721220. The cubic root of 872081 is about 95.5400816740.

The spelling of 872081 in words is "eight hundred seventy-two thousand, eighty-one".