2853865 has 16 divisors (see below), whose sum is σ = 3975552. Its totient is φ = 1926144.

The previous prime is 2853853. The next prime is 2853869. The reversal of 2853865 is 5683582.

It is a cyclic number.

It is not a de Polignac number, because 2853865 - 2⁵ = 2853833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2853869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1737 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (248472).

2^2853865 is an apocalyptic number.

It is an amenable number.

2853865 is a deficient number, since it is larger than the sum of its proper divisors (1121687).

2853865 is a wasteful number, since it uses less digits than its factorization.

2853865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its digits is 57600, while the sum is 37.

The square root of 2853865 is about 1689.3386279843. The cubic root of 2853865 is about 141.8440561416.

The spelling of 2853865 in words is "two million, eight hundred fifty-three thousand, eight hundred sixty-five".