68321178 has 32 divisors (see below), whose sum is σ = 158428800. Its totient is φ = 21783168.

The previous prime is 68321171. The next prime is 68321191. The reversal of 68321178 is 87112386.

It is not an unprimeable number, because it can be changed into a prime (68321171) 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, 26263 + ... + 28746.

It is an arithmetic number, because the mean of its divisors is an integer number (4950900).

Almost surely, 2^68321178 is an apocalyptic number.

68321178 is an abundant number, since it is smaller than the sum of its proper divisors (90107622).

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

68321178 is a wasteful number, since it uses less digits than its factorization.

68321178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55043 (or 55037 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 68321178 is about 8265.6625868711. The cubic root of 68321178 is about 408.8071176810.

The spelling of 68321178 in words is "sixty-eight million, three hundred twenty-one thousand, one hundred seventy-eight".