164646 has 16 divisors (see below), whose sum is σ = 366000. Its totient is φ = 54864.

The previous prime is 164627. The next prime is 164653. The reversal of 164646 is 646461.

164646 is a `hidden beast` number, since 16 + 4 + 646 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1471 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (22875).

2¹⁶⁴⁶⁴⁶ is an apocalyptic number.

164646 is an abundant number, since it is smaller than the sum of its proper divisors (201354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164646 is a wasteful number, since it uses less digits than its factorization.

164646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060 (or 3054 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 164646 is about 405.7659423855. The cubic root of 164646 is about 54.8088127621.

The spelling of 164646 in words is "one hundred sixty-four thousand, six hundred forty-six".