194564 has 12 divisors (see below), whose sum is σ = 344064. Its totient is φ = 96264.

The previous prime is 194543. The next prime is 194569. The reversal of 194564 is 465491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194569) by changing a digit.

194564 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (28672).

2¹⁹⁴⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

194564 is a deficient number, since it is larger than the sum of its proper divisors (149500).

194564 is a wasteful number, since it uses less digits than its factorization.

194564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 512 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 194564 is about 441.0940942701. The cubic root of 194564 is about 57.9456486477.

The spelling of 194564 in words is "one hundred ninety-four thousand, five hundred sixty-four".