308668 has 6 divisors (see below), whose sum is σ = 540176. Its totient is φ = 154332.

The previous prime is 308663. The next prime is 308681. The reversal of 308668 is 866803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308663) by changing a digit.

308668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38580 + ... + 38587.

2³⁰⁸⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

308668 is a deficient number, since it is larger than the sum of its proper divisors (231508).

308668 is a wasteful number, since it uses less digits than its factorization.

308668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77171 (or 77169 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 308668 is about 555.5789772841. The cubic root of 308668 is about 67.5819215688.

The spelling of 308668 in words is "three hundred eight thousand, six hundred sixty-eight".