164859 has 8 divisors (see below), whose sum is σ = 221760. Its totient is φ = 108936.

The previous prime is 164839. The next prime is 164881. The reversal of 164859 is 958461.

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

It is a de Polignac number, because none of the positive numbers 2^k-164859 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 690.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2¹⁶⁴⁸⁵⁹ is an apocalyptic number.

164859 is a deficient number, since it is larger than the sum of its proper divisors (56901).

164859 is a wasteful number, since it uses less digits than its factorization.

164859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

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

The square root of 164859 is about 406.0283241352. The cubic root of 164859 is about 54.8324376836.

The spelling of 164859 in words is "one hundred sixty-four thousand, eight hundred fifty-nine".