89666 has 8 divisors (see below), whose sum is σ = 136080. Its totient is φ = 44308.

The previous prime is 89659. The next prime is 89669. The reversal of 89666 is 66698.

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

It is a plaindrome in base 3 and base 9.

It is a zygodrome in base 3.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5 + ... + 423.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2⁸⁹⁶⁶⁶ is an apocalyptic number.

89666 is a deficient number, since it is larger than the sum of its proper divisors (46414).

89666 is a wasteful number, since it uses less digits than its factorization.

89666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528.

The product of its digits is 15552, while the sum is 35.

The square root of 89666 is about 299.4428159098. The cubic root of 89666 is about 44.7585421102.

The spelling of 89666 in words is "eighty-nine thousand, six hundred sixty-six".