68320368 has 80 divisors (see below), whose sum is σ = 197487360. Its totient is φ = 22613184.

The previous prime is 68320363. The next prime is 68320381. The reversal of 68320368 is 86302386.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68320363) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 71671 + ... + 72617.

It is an arithmetic number, because the mean of its divisors is an integer number (2468592).

Almost surely, 2^68320368 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 68320368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98743680).

68320368 is an abundant number, since it is smaller than the sum of its proper divisors (129166992).

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

68320368 is a wasteful number, since it uses less digits than its factorization.

68320368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68320368 is about 8265.6135888390. The cubic root of 68320368 is about 408.8055021005.

The spelling of 68320368 in words is "sixty-eight million, three hundred twenty thousand, three hundred sixty-eight".