164870 has 8 divisors (see below), whose sum is σ = 296784. Its totient is φ = 65944.

The previous prime is 164839. The next prime is 164881. The reversal of 164870 is 78461.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

164870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8234 + ... + 8253.

It is an arithmetic number, because the mean of its divisors is an integer number (37098).

2¹⁶⁴⁸⁷⁰ is an apocalyptic number.

164870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164870 is a deficient number, since it is larger than the sum of its proper divisors (131914).

164870 is a wasteful number, since it uses less digits than its factorization.

164870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16494.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 164870 is about 406.0418697622. The cubic root of 164870 is about 54.8336571972.

The spelling of 164870 in words is "one hundred sixty-four thousand, eight hundred seventy".