164423 has 8 divisors (see below), whose sum is σ = 190848. Its totient is φ = 138744.

The previous prime is 164419. The next prime is 164429. The reversal of 164423 is 324461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164423 - 2² = 164419 is a prime.

It is a super-3 number, since 3×164423³ = 13335489398264901, which contains 333 as substring.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 164395 and 164404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440 + ... + 722.

It is an arithmetic number, because the mean of its divisors is an integer number (23856).

2¹⁶⁴⁴²³ is an apocalyptic number.

164423 is a deficient number, since it is larger than the sum of its proper divisors (26425).

164423 is an equidigital number, since it uses as much as digits as its factorization.

164423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 576, while the sum is 20.

The square root of 164423 is about 405.4910603207. The cubic root of 164423 is about 54.7840568464.

Adding to 164423 its reverse (324461), we get a palindrome (488884).

The spelling of 164423 in words is "one hundred sixty-four thousand, four hundred twenty-three".