164823 has 4 divisors (see below), whose sum is σ = 219768. Its totient is φ = 109880.

The previous prime is 164821. The next prime is 164831. The reversal of 164823 is 328461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 164823 - 2¹ = 164821 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 164793 and 164802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27468 + ... + 27473.

It is an arithmetic number, because the mean of its divisors is an integer number (54942).

2¹⁶⁴⁸²³ is an apocalyptic number.

164823 is a deficient number, since it is larger than the sum of its proper divisors (54945).

164823 is an equidigital number, since it uses as much as digits as its factorization.

164823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54944.

The product of its digits is 1152, while the sum is 24.

The square root of 164823 is about 405.9839898321. The cubic root of 164823 is about 54.8284461687.

The spelling of 164823 in words is "one hundred sixty-four thousand, eight hundred twenty-three".