872108985 has 16 divisors (see below), whose sum is σ = 1522226880. Its totient is φ = 422840640.

The previous prime is 872108947. The next prime is 872108989. The reversal of 872108985 is 589801278.

It is not a de Polignac number, because 872108985 - 2¹⁷ = 871977913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (872108989) 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, 2642590 + ... + 2642919.

It is an arithmetic number, because the mean of its divisors is an integer number (95139180).

Almost surely, 2^872108985 is an apocalyptic number.

It is an amenable number.

872108985 is a deficient number, since it is larger than the sum of its proper divisors (650117895).

872108985 is a wasteful number, since it uses less digits than its factorization.

872108985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285528.

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 872108985 is about 29531.4914117117. The cubic root of 872108985 is about 955.4110362057.

The spelling of 872108985 in words is "eight hundred seventy-two million, one hundred eight thousand, nine hundred eighty-five".