164847 has 4 divisors (see below), whose sum is σ = 219800. Its totient is φ = 109896.

The previous prime is 164839. The next prime is 164881. The reversal of 164847 is 748461.

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

It is not a de Polignac number, because 164847 - 2³ = 164839 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164837) 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, 27472 + ... + 27477.

It is an arithmetic number, because the mean of its divisors is an integer number (54950).

2¹⁶⁴⁸⁴⁷ is an apocalyptic number.

164847 is a deficient number, since it is larger than the sum of its proper divisors (54953).

164847 is an equidigital number, since it uses as much as digits as its factorization.

164847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54952.

The product of its digits is 5376, while the sum is 30.

The square root of 164847 is about 406.0135465720. The cubic root of 164847 is about 54.8311072432.

The spelling of 164847 in words is "one hundred sixty-four thousand, eight hundred forty-seven".