489666 has 8 divisors (see below), whose sum is σ = 979344. Its totient is φ = 163220.

The previous prime is 489659. The next prime is 489673. The reversal of 489666 is 666984.

It is an interprime number because it is at equal distance from previous prime (489659) and next prime (489673).

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

489666 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40800 + ... + 40811.

It is an arithmetic number, because the mean of its divisors is an integer number (122418).

2⁴⁸⁹⁶⁶⁶ is an apocalyptic number.

489666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489666 is a wasteful number, since it uses less digits than its factorization.

489666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81616.

The product of its digits is 62208, while the sum is 39.

The square root of 489666 is about 699.7613879030. The cubic root of 489666 is about 78.8194348552.

The spelling of 489666 in words is "four hundred eighty-nine thousand, six hundred sixty-six".