89668 has 12 divisors (see below), whose sum is σ = 162540. Its totient is φ = 43232.

The previous prime is 89659. The next prime is 89669. The reversal of 89668 is 86698.

It can be written as a sum of positive squares in 2 ways, for example, as 23104 + 66564 = 152^2 + 258^2 .

It is not an unprimeable number, because it can be changed into a prime (89669) by changing a digit.

89668 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 in 3 ways as a sum of consecutive naturals, for example, 271 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (13545).

2⁸⁹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

89668 is a deficient number, since it is larger than the sum of its proper divisors (72872).

89668 is a wasteful number, since it uses less digits than its factorization.

89668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 804 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 89668 is about 299.4461554270. The cubic root of 89668 is about 44.7588748874.

It can be divided in two parts, 89 and 668, that added together give a palindrome (757).

The spelling of 89668 in words is "eighty-nine thousand, six hundred sixty-eight".