2085866 has 16 divisors (see below), whose sum is σ = 3421440. Its totient is φ = 949440.

The previous prime is 2085857. The next prime is 2085869. The reversal of 2085866 is 6685802.

It is not an unprimeable number, because it can be changed into a prime (2085869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (213840).

2^2085866 is an apocalyptic number.

2085866 is a deficient number, since it is larger than the sum of its proper divisors (1335574).

2085866 is a wasteful number, since it uses less digits than its factorization.

2085866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2085866 is about 1444.2527479635. The cubic root of 2085866 is about 127.7699726101.

The spelling of 2085866 in words is "two million, eighty-five thousand, eight hundred sixty-six".