68178012 has 72 divisors (see below), whose sum is σ = 189068544. Its totient is φ = 19057248.

The previous prime is 68177999. The next prime is 68178031. The reversal of 68178012 is 21087186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26403 + ... + 28869.

It is an arithmetic number, because the mean of its divisors is an integer number (2625952).

Almost surely, 2^68178012 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 68178012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94534272).

68178012 is an abundant number, since it is smaller than the sum of its proper divisors (120890532).

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

68178012 is a wasteful number, since it uses less digits than its factorization.

68178012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 68178012 is about 8256.9977594765. The cubic root of 68178012 is about 408.5213682731.

The spelling of 68178012 in words is "sixty-eight million, one hundred seventy-eight thousand, twelve".