189685 has 8 divisors (see below), whose sum is σ = 231840. Its totient is φ = 148944.

The previous prime is 189671. The next prime is 189691. The reversal of 189685 is 586981.

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 189685 - 2⁵ = 189653 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 27 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (28980).

2¹⁸⁹⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

189685 is a deficient number, since it is larger than the sum of its proper divisors (42155).

189685 is an equidigital number, since it uses as much as digits as its factorization.

189685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 17280, while the sum is 37.

The square root of 189685 is about 435.5284146873. The cubic root of 189685 is about 57.4571829953.

The spelling of 189685 in words is "one hundred eighty-nine thousand, six hundred eighty-five".