2016865 has 8 divisors (see below), whose sum is σ = 2433600. Its totient is φ = 1604592.

The previous prime is 2016857. The next prime is 2016877. The reversal of 2016865 is 5686102.

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 2016865 - 2³ = 2016857 is a prime.

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, 19 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (304200).

2^2016865 is an apocalyptic number.

It is an amenable number.

2016865 is a deficient number, since it is larger than the sum of its proper divisors (416735).

2016865 is a wasteful number, since it uses less digits than its factorization.

2016865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2016865 is about 1420.1637229559. The cubic root of 2016865 is about 126.3452569988.

The spelling of 2016865 in words is "two million, sixteen thousand, eight hundred sixty-five".