2005847 has 4 divisors (see below), whose sum is σ = 2123856. Its totient is φ = 1887840.

The previous prime is 2005841. The next prime is 2005859. The reversal of 2005847 is 7485002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2005847 - 2⁴ = 2005831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58979 + ... + 59012.

It is an arithmetic number, because the mean of its divisors is an integer number (530964).

2^2005847 is an apocalyptic number.

2005847 is a deficient number, since it is larger than the sum of its proper divisors (118009).

2005847 is a wasteful number, since it uses less digits than its factorization.

2005847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118008.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2005847 is about 1416.2792803681. The cubic root of 2005847 is about 126.1147648413.

The spelling of 2005847 in words is "two million, five thousand, eight hundred forty-seven".