872065 has 4 divisors (see below), whose sum is σ = 1046484. Its totient is φ = 697648.

The previous prime is 872057. The next prime is 872071. The reversal of 872065 is 560278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560278 = 2 ⋅280139.

It can be written as a sum of positive squares in 2 ways, for example, as 583696 + 288369 = 764^2 + 537^2 .

It is a cyclic number.

It is not a de Polignac number, because 872065 - 2³ = 872057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87202 + ... + 87211.

It is an arithmetic number, because the mean of its divisors is an integer number (261621).

2⁸⁷²⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

872065 is a deficient number, since it is larger than the sum of its proper divisors (174419).

872065 is a wasteful number, since it uses less digits than its factorization.

872065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174418.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 872065 is about 933.8442054219. The cubic root of 872065 is about 95.5394973817.

The spelling of 872065 in words is "eight hundred seventy-two thousand, sixty-five".