318668 has 24 divisors (see below), whose sum is σ = 672000. Its totient is φ = 129168.

The previous prime is 318653. The next prime is 318671. The reversal of 318668 is 866813.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (28000).

2³¹⁸⁶⁶⁸ is an apocalyptic number.

318668 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336000).

318668 is an abundant number, since it is smaller than the sum of its proper divisors (353332).

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

318668 is a wasteful number, since it uses less digits than its factorization.

318668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 627 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 318668 is about 564.5068644401. The cubic root of 318668 is about 68.3040022178.

The spelling of 318668 in words is "three hundred eighteen thousand, six hundred sixty-eight".