2006845 has 8 divisors (see below), whose sum is σ = 2453976. Its totient is φ = 1574976.

The previous prime is 2006831. The next prime is 2006869. The reversal of 2006845 is 5486002.

It can be written as a sum of positive squares in 4 ways, for example, as 1044484 + 962361 = 1022^2 + 981^2 .

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 2006845 - 2⁵ = 2006813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522 + ... + 4051.

It is an arithmetic number, because the mean of its divisors is an integer number (306747).

2^2006845 is an apocalyptic number.

It is an amenable number.

2006845 is a deficient number, since it is larger than the sum of its proper divisors (447131).

2006845 is an equidigital number, since it uses as much as digits as its factorization.

2006845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2006845 is about 1416.6315681927. The cubic root of 2006845 is about 126.1356773149.

The spelling of 2006845 in words is "two million, six thousand, eight hundred forty-five".