2104865 has 8 divisors (see below), whose sum is σ = 2886720. Its totient is φ = 1443312.

The previous prime is 2104859. The next prime is 2104867. The reversal of 2104865 is 5684012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104865 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2104867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30035 + ... + 30104.

It is an arithmetic number, because the mean of its divisors is an integer number (360840).

2^2104865 is an apocalyptic number.

It is an amenable number.

2104865 is a deficient number, since it is larger than the sum of its proper divisors (781855).

2104865 is an equidigital number, since it uses as much as digits as its factorization.

2104865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60151.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2104865 is about 1450.8152880364. The cubic root of 2104865 is about 128.1567294013.

Adding to 2104865 its reverse (5684012), we get a palindrome (7788877).

The spelling of 2104865 in words is "two million, one hundred four thousand, eight hundred sixty-five".