2086217 has 4 divisors (see below), whose sum is σ = 2384256. Its totient is φ = 1788180.

The previous prime is 2086213. The next prime is 2086243. The reversal of 2086217 is 7126802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7126802 = 2 ⋅3563401.

It is a cyclic number.

It is not a de Polignac number, because 2086217 - 2² = 2086213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2086211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 149009 + ... + 149022.

It is an arithmetic number, because the mean of its divisors is an integer number (596064).

2^2086217 is an apocalyptic number.

It is an amenable number.

2086217 is a deficient number, since it is larger than the sum of its proper divisors (298039).

2086217 is an equidigital number, since it uses as much as digits as its factorization.

2086217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298038.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2086217 is about 1444.3742589786. The cubic root of 2086217 is about 127.7771390572. Note that the first 3 decimals are identical.

The spelling of 2086217 in words is "two million, eighty-six thousand, two hundred seventeen".