490668 has 24 divisors (see below), whose sum is σ = 1182720. Its totient is φ = 158160.

The previous prime is 490663. The next prime is 490697. The reversal of 490668 is 866094.

It is not an unprimeable number, because it can be changed into a prime (490661) by changing a digit.

490668 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 7 ways as a sum of consecutive naturals, for example, 288 + ... + 1031.

It is an arithmetic number, because the mean of its divisors is an integer number (49280).

2⁴⁹⁰⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

490668 is an abundant number, since it is smaller than the sum of its proper divisors (692052).

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

490668 is a wasteful number, since it uses less digits than its factorization.

490668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 490668 is about 700.4769803498. The cubic root of 490668 is about 78.8731607723.

The spelling of 490668 in words is "four hundred ninety thousand, six hundred sixty-eight".