2008865 has 4 divisors (see below), whose sum is σ = 2410644. Its totient is φ = 1607088.

The previous prime is 2008823. The next prime is 2008871. The reversal of 2008865 is 5688002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 1628176 = 617^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 2008865 - 2¹⁴ = 1992481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 200882 + ... + 200891.

It is an arithmetic number, because the mean of its divisors is an integer number (602661).

2^2008865 is an apocalyptic number.

It is an amenable number.

2008865 is a deficient number, since it is larger than the sum of its proper divisors (401779).

2008865 is an equidigital number, since it uses as much as digits as its factorization.

2008865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401778.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2008865 is about 1417.3443477151. The cubic root of 2008865 is about 126.1779839584.

The spelling of 2008865 in words is "two million, eight thousand, eight hundred sixty-five".