493668 has 48 divisors (see below), whose sum is σ = 1464960. Its totient is φ = 140832.

The previous prime is 493657. The next prime is 493693. The reversal of 493668 is 866394.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

493668 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 15 ways as a sum of consecutive naturals, for example, 430 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (30520).

2⁴⁹³⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 493668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732480).

493668 is an abundant number, since it is smaller than the sum of its proper divisors (971292).

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

493668 is a wasteful number, since it uses less digits than its factorization.

493668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 665 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 493668 is about 702.6151151235. The cubic root of 493668 is about 79.0335807672.

The spelling of 493668 in words is "four hundred ninety-three thousand, six hundred sixty-eight".