68908 has 24 divisors (see below), whose sum is σ = 145152. Its totient is φ = 27984.

The previous prime is 68903. The next prime is 68909. The reversal of 68908 is 80986.

It is a self number, because there is not a number n which added to its sum of digits gives 68908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68903) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 591 + ... + 697.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

2⁶⁸⁹⁰⁸ 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 68908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72576).

68908 is an abundant number, since it is smaller than the sum of its proper divisors (76244).

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

68908 is a wasteful number, since it uses less digits than its factorization.

68908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 68908 is about 262.5033333122. The cubic root of 68908 is about 40.9974220072.

The spelling of 68908 in words is "sixty-eight thousand, nine hundred eight".