170447 has 2 divisors, whose sum is σ = 170448. Its totient is φ = 170446.

The previous prime is 170441. The next prime is 170473. The reversal of 170447 is 744071.

It is a weak prime.

It is an emirp because it is prime and its reverse (744071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170447 - 2⁶ = 170383 is a prime.

It is a Chen prime.

It is equal to p₁₅₅₃₉ and since 170447 and 15539 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170441) 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 as a sum of consecutive naturals, namely, 85223 + 85224.

It is an arithmetic number, because the mean of its divisors is an integer number (85224).

2¹⁷⁰⁴⁴⁷ is an apocalyptic number.

170447 is a deficient number, since it is larger than the sum of its proper divisors (1).

170447 is an equidigital number, since it uses as much as digits as its factorization.

170447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 170447 is about 412.8522738220. The cubic root of 170447 is about 55.4450935492.

The spelling of 170447 in words is "one hundred seventy thousand, four hundred forty-seven", and thus it is an iban number.