68385878 has 8 divisors (see below), whose sum is σ = 111904200. Its totient is φ = 31084480.

The previous prime is 68385871. The next prime is 68385931. The reversal of 68385878 is 87858386.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68385871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554203 + ... + 1554246.

It is an arithmetic number, because the mean of its divisors is an integer number (13988025).

Almost surely, 2^68385878 is an apocalyptic number.

68385878 is a deficient number, since it is larger than the sum of its proper divisors (43518322).

68385878 is a wasteful number, since it uses less digits than its factorization.

68385878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108462.

The product of its digits is 2580480, while the sum is 53.

The square root of 68385878 is about 8269.5754425484. The cubic root of 68385878 is about 408.9361234367.

The spelling of 68385878 in words is "sixty-eight million, three hundred eighty-five thousand, eight hundred seventy-eight".