2160985 has 8 divisors (see below), whose sum is σ = 2663496. Its totient is φ = 1681920.

The previous prime is 2160971. The next prime is 2160997. The reversal of 2160985 is 5890612.

2160985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 1565001 = 772^2 + 1251^2 .

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

It is not a de Polignac number, because 2160985 - 2⁵ = 2160953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5656 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (332937).

2^2160985 is an apocalyptic number.

It is an amenable number.

2160985 is a deficient number, since it is larger than the sum of its proper divisors (502511).

2160985 is a wasteful number, since it uses less digits than its factorization.

2160985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11723.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2160985 is about 1470.0289112803. The cubic root of 2160985 is about 129.2857276582.

The spelling of 2160985 in words is "two million, one hundred sixty thousand, nine hundred eighty-five".