189568 has 16 divisors (see below), whose sum is σ = 377910. Its totient is φ = 94720.

The previous prime is 189559. The next prime is 189583. The reversal of 189568 is 865981.

It can be written as a sum of positive squares in only one way, i.e., 166464 + 23104 = 408^2 + 152^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

189568 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613 + ... + 868.

2¹⁸⁹⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

189568 is a deficient number, since it is larger than the sum of its proper divisors (188342).

189568 is an equidigital number, since it uses as much as digits as its factorization.

189568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1483 counting only the distinct ones).

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

The square root of 189568 is about 435.3940743740. The cubic root of 189568 is about 57.4453671374.

It can be divided in two parts, 189 and 568, that added together give a palindrome (757).

The spelling of 189568 in words is "one hundred eighty-nine thousand, five hundred sixty-eight".