164805 has 8 divisors (see below), whose sum is σ = 263712. Its totient is φ = 87888.

The previous prime is 164789. The next prime is 164809. The reversal of 164805 is 508461.

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

It is not a de Polignac number, because 164805 - 2⁴ = 164789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5479 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (32964).

2¹⁶⁴⁸⁰⁵ is an apocalyptic number.

164805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164805 is a deficient number, since it is larger than the sum of its proper divisors (98907).

164805 is a wasteful number, since it uses less digits than its factorization.

164805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10995.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 164805 is about 405.9618208650. The cubic root of 164805 is about 54.8264501933.

It can be divided in two parts, 164 and 805, that added together give a palindrome (969).

The spelling of 164805 in words is "one hundred sixty-four thousand, eight hundred five".