2086665 has 48 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 892416.

The previous prime is 2086657. The next prime is 2086673. The reversal of 2086665 is 5666802.

It is an interprime number because it is at equal distance from previous prime (2086657) and next prime (2086673).

It is not a de Polignac number, because 2086665 - 2³ = 2086657 is a prime.

2086665 is a lucky number.

It is an unprimeable number.

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, 12412 + ... + 12578.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2^2086665 is an apocalyptic number.

It is an amenable number.

2086665 is a deficient number, since it is larger than the sum of its proper divisors (2050167).

2086665 is a wasteful number, since it uses less digits than its factorization.

2086665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2086665 is about 1444.5293351123. The cubic root of 2086665 is about 127.7862848078.

The spelling of 2086665 in words is "two million, eighty-six thousand, six hundred sixty-five".