2086905 has 24 divisors (see below), whose sum is σ = 3503808. Its totient is φ = 1060576.

The previous prime is 2086901. The next prime is 2086907. The reversal of 2086905 is 5096802.

It is not a de Polignac number, because 2086905 - 2² = 2086901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2086901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7804 + ... + 8066.

It is an arithmetic number, because the mean of its divisors is an integer number (145992).

2^2086905 is an apocalyptic number.

It is an amenable number.

2086905 is a deficient number, since it is larger than the sum of its proper divisors (1416903).

2086905 is a wasteful number, since it uses less digits than its factorization.

2086905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2086905 is about 1444.6124047647. The cubic root of 2086905 is about 127.7911837786.

The spelling of 2086905 in words is "two million, eighty-six thousand, nine hundred five".