872689 has 8 divisors (see below), whose sum is σ = 959040. Its totient is φ = 790416.

The previous prime is 872687. The next prime is 872731. The reversal of 872689 is 986278.

872689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 872689 - 2¹ = 872687 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (119880).

2⁸⁷²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

872689 is a deficient number, since it is larger than the sum of its proper divisors (86351).

872689 is a wasteful number, since it uses less digits than its factorization.

872689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its digits is 48384, while the sum is 40.

The square root of 872689 is about 934.1782485158. The cubic root of 872689 is about 95.5622794880.

The spelling of 872689 in words is "eight hundred seventy-two thousand, six hundred eighty-nine".