68316672 has 80 divisors (see below), whose sum is σ = 184631040. Its totient is φ = 22444032.

The previous prime is 68316671. The next prime is 68316673. The reversal of 68316672 is 27661386.

It is an interprime number because it is at equal distance from previous prime (68316671) and next prime (68316673).

It is a self number, because there is not a number n which added to its sum of digits gives 68316672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68316671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121063 + ... + 121625.

It is an arithmetic number, because the mean of its divisors is an integer number (2307888).

Almost surely, 2^68316672 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 68316672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92315520).

68316672 is an abundant number, since it is smaller than the sum of its proper divisors (116314368).

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

68316672 is an equidigital number, since it uses as much as digits as its factorization.

68316672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 647 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 68316672 is about 8265.3900089469. The cubic root of 68316672 is about 408.7981301048.

The spelling of 68316672 in words is "sixty-eight million, three hundred sixteen thousand, six hundred seventy-two".