68387916 has 48 divisors (see below), whose sum is σ = 173779200. Its totient is φ = 20849472.

The previous prime is 68387911. The next prime is 68387927. The reversal of 68387916 is 61978386.

It is not an unprimeable number, because it can be changed into a prime (68387911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441 + ... + 11783.

It is an arithmetic number, because the mean of its divisors is an integer number (3620400).

Almost surely, 2^68387916 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 68387916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86889600).

68387916 is an abundant number, since it is smaller than the sum of its proper divisors (105391284).

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

68387916 is a wasteful number, since it uses less digits than its factorization.

68387916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10398 (or 10396 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 68387916 is about 8269.6986644013. The cubic root of 68387916 is about 408.9401856962.

The spelling of 68387916 in words is "sixty-eight million, three hundred eighty-seven thousand, nine hundred sixteen".