68308 has 6 divisors (see below), whose sum is σ = 119546. Its totient is φ = 34152.

The previous prime is 68281. The next prime is 68311. The reversal of 68308 is 80386.

It can be written as a sum of positive squares in only one way, i.e., 56644 + 11664 = 238^2 + 108^2 .

It is a congruent number.

It is an unprimeable number.

68308 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8535 + ... + 8542.

2⁶⁸³⁰⁸ is an apocalyptic number.

It is an amenable number.

68308 is a deficient number, since it is larger than the sum of its proper divisors (51238).

68308 is a wasteful number, since it uses less digits than its factorization.

68308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17081 (or 17079 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 68308 is about 261.3579920339. The cubic root of 68308 is about 40.8780831997.

The spelling of 68308 in words is "sixty-eight thousand, three hundred eight".