68178312 has 48 divisors (see below), whose sum is σ = 185902080. Its totient is φ = 22572000.

The previous prime is 68178307. The next prime is 68178317. The reversal of 68178312 is 21387186.

It is an interprime number because it is at equal distance from previous prime (68178307) and next prime (68178317).

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

It is not an unprimeable number, because it can be changed into a prime (68178317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7737 + ... + 14007.

It is an arithmetic number, because the mean of its divisors is an integer number (3872960).

Almost surely, 2^68178312 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 68178312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92951040).

68178312 is an abundant number, since it is smaller than the sum of its proper divisors (117723768).

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

68178312 is a wasteful number, since it uses less digits than its factorization.

68178312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434 (or 6427 counting only the distinct ones).

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

The square root of 68178312 is about 8257.0159258657. The cubic root of 68178312 is about 408.5219674703.

It can be divided in two parts, 6817 and 8312, that added together give a square (15129 = 123²).

The spelling of 68178312 in words is "sixty-eight million, one hundred seventy-eight thousand, three hundred twelve".