189655 has 8 divisors (see below), whose sum is σ = 230832. Its totient is φ = 149568.

The previous prime is 189653. The next prime is 189661. The reversal of 189655 is 556981.

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

It is a cyclic number.

It is not a de Polignac number, because 189655 - 2¹ = 189653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189653) 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, 187 + ... + 643.

It is an arithmetic number, because the mean of its divisors is an integer number (28854).

2¹⁸⁹⁶⁵⁵ is an apocalyptic number.

189655 is a deficient number, since it is larger than the sum of its proper divisors (41177).

189655 is an equidigital number, since it uses as much as digits as its factorization.

189655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its digits is 10800, while the sum is 34.

The square root of 189655 is about 435.4939724038. The cubic root of 189655 is about 57.4541537515.

The spelling of 189655 in words is "one hundred eighty-nine thousand, six hundred fifty-five".