2006865 has 48 divisors (see below), whose sum is σ = 4163328. Its totient is φ = 874368.

The previous prime is 2006831. The next prime is 2006869. The reversal of 2006865 is 5686002.

It is not a de Polignac number, because 2006865 - 2⁹ = 2006353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2006869) 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 47 ways as a sum of consecutive naturals, for example, 7107 + ... + 7383.

It is an arithmetic number, because the mean of its divisors is an integer number (86736).

2^2006865 is an apocalyptic number.

It is an amenable number.

2006865 is an abundant number, since it is smaller than the sum of its proper divisors (2156463).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2006865 is a wasteful number, since it uses less digits than its factorization.

2006865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2006865 is about 1416.6386271735. The cubic root of 2006865 is about 126.1360963316.

The spelling of 2006865 in words is "two million, six thousand, eight hundred sixty-five".