164465 has 16 divisors (see below), whose sum is σ = 233472. Its totient is φ = 108864.

The previous prime is 164449. The next prime is 164471. The reversal of 164465 is 564461.

It is a happy number.

It is not a de Polignac number, because 164465 - 2⁴ = 164449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1232 + ... + 1358.

It is an arithmetic number, because the mean of its divisors is an integer number (14592).

2¹⁶⁴⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

164465 is a deficient number, since it is larger than the sum of its proper divisors (69007).

164465 is a wasteful number, since it uses less digits than its factorization.

164465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

The product of its digits is 2880, while the sum is 26.

The square root of 164465 is about 405.5428460718. The cubic root of 164465 is about 54.7887211057.

The spelling of 164465 in words is "one hundred sixty-four thousand, four hundred sixty-five".