68178874 has 8 divisors (see below), whose sum is σ = 108284148. Its totient is φ = 32084160.

The previous prime is 68178871. The next prime is 68178883. The reversal of 68178874 is 47887186.

It can be written as a sum of positive squares in 2 ways, for example, as 55398249 + 12780625 = 7443^2 + 3575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68178871) 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 3 ways as a sum of consecutive naturals, for example, 1002597 + ... + 1002664.

Almost surely, 2^68178874 is an apocalyptic number.

68178874 is a deficient number, since it is larger than the sum of its proper divisors (40105274).

68178874 is a wasteful number, since it uses less digits than its factorization.

68178874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005280.

The product of its digits is 602112, while the sum is 49.

The square root of 68178874 is about 8257.0499574606. The cubic root of 68178874 is about 408.5230899618.

The spelling of 68178874 in words is "sixty-eight million, one hundred seventy-eight thousand, eight hundred seventy-four".