495666 has 32 divisors (see below), whose sum is σ = 1126080. Its totient is φ = 161568.

The previous prime is 495647. The next prime is 495667. The reversal of 495666 is 666594.

It is a happy number.

495666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 495666.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 495666.

It is not an unprimeable number, because it can be changed into a prime (495667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3550 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (35190).

2⁴⁹⁵⁶⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563040).

495666 is an abundant number, since it is smaller than the sum of its proper divisors (630414).

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

495666 is a wasteful number, since it uses less digits than its factorization.

495666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 495666 is about 704.0355104680. The cubic root of 495666 is about 79.1400602496.

The spelling of 495666 in words is "four hundred ninety-five thousand, six hundred sixty-six".