2085643 has 8 divisors (see below), whose sum is σ = 2419712. Its totient is φ = 1760616.

The previous prime is 2085623. The next prime is 2085659. The reversal of 2085643 is 3465802.

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

It is a cyclic number.

It is not a de Polignac number, because 2085643 - 2⁹ = 2085131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2085623) 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 7 ways as a sum of consecutive naturals, for example, 1755 + ... + 2692.

It is an arithmetic number, because the mean of its divisors is an integer number (302464).

2^2085643 is an apocalyptic number.

2085643 is a deficient number, since it is larger than the sum of its proper divisors (334069).

2085643 is an equidigital number, since it uses as much as digits as its factorization.

2085643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2085643 is about 1444.1755433464. The cubic root of 2085643 is about 127.7654191506.

The spelling of 2085643 in words is "two million, eighty-five thousand, six hundred forty-three".