164895 has 8 divisors (see below), whose sum is σ = 263856. Its totient is φ = 87936.

The previous prime is 164893. The next prime is 164911. The reversal of 164895 is 598461.

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

It is not a de Polignac number, because 164895 - 2¹ = 164893 is a prime.

It is a super-2 number, since 2×164895² = 54380722050, which contains 22 as substring.

164895 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164893) 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, 5482 + ... + 5511.

It is an arithmetic number, because the mean of its divisors is an integer number (32982).

2¹⁶⁴⁸⁹⁵ is an apocalyptic number.

164895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164895 is a deficient number, since it is larger than the sum of its proper divisors (98961).

164895 is a wasteful number, since it uses less digits than its factorization.

164895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001.

The product of its digits is 8640, while the sum is 33.

The square root of 164895 is about 406.0726535979. The cubic root of 164895 is about 54.8364286174.

The spelling of 164895 in words is "one hundred sixty-four thousand, eight hundred ninety-five".