164447 has 2 divisors, whose sum is σ = 164448. Its totient is φ = 164446.

The previous prime is 164443. The next prime is 164449. The reversal of 164447 is 744461.

164447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164447 - 2² = 164443 is a prime.

Together with 164449, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82223 + 82224.

It is an arithmetic number, because the mean of its divisors is an integer number (82224).

2¹⁶⁴⁴⁴⁷ is an apocalyptic number.

164447 is a deficient number, since it is larger than the sum of its proper divisors (1).

164447 is an equidigital number, since it uses as much as digits as its factorization.

164447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 164447 is about 405.5206529882. The cubic root of 164447 is about 54.7867222347.

The spelling of 164447 in words is "one hundred sixty-four thousand, four hundred forty-seven".