89966 has 4 divisors (see below), whose sum is σ = 134952. Its totient is φ = 44982.

The previous prime is 89963. The next prime is 89977. The reversal of 89966 is 66998.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22490 + ... + 22493.

It is an arithmetic number, because the mean of its divisors is an integer number (33738).

2⁸⁹⁹⁶⁶ is an apocalyptic number.

89966 is a deficient number, since it is larger than the sum of its proper divisors (44986).

89966 is a wasteful number, since it uses less digits than its factorization.

89966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44985.

The product of its digits is 23328, while the sum is 38.

The square root of 89966 is about 299.9433279805. The cubic root of 89966 is about 44.8084035044.

The spelling of 89966 in words is "eighty-nine thousand, nine hundred sixty-six".