47605 has 4 divisors (see below), whose sum is σ = 57132. Its totient is φ = 38080.

The previous prime is 47599. The next prime is 47609. The reversal of 47605 is 50674.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19044 + 28561 = 138^2 + 169^2 .

It is not a de Polignac number, because 47605 - 2⁹ = 47093 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4756 + ... + 4765.

It is an arithmetic number, because the mean of its divisors is an integer number (14283).

2⁴⁷⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

47605 is a deficient number, since it is larger than the sum of its proper divisors (9527).

47605 is an equidigital number, since it uses as much as digits as its factorization.

47605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 47605 is about 218.1857007230. The cubic root of 47605 is about 36.2424478917.

The spelling of 47605 in words is "forty-seven thousand, six hundred five".