68118478 has 4 divisors (see below), whose sum is σ = 102177720. Its totient is φ = 34059238.

The previous prime is 68118469. The next prime is 68118481. The reversal of 68118478 is 87481186.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17029618 + ... + 17029621.

It is an arithmetic number, because the mean of its divisors is an integer number (25544430).

Almost surely, 2^68118478 is an apocalyptic number.

68118478 is a deficient number, since it is larger than the sum of its proper divisors (34059242).

68118478 is a wasteful number, since it uses less digits than its factorization.

68118478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34059241.

The product of its digits is 86016, while the sum is 43.

The square root of 68118478 is about 8253.3919087851. The cubic root of 68118478 is about 408.4024247751.

The spelling of 68118478 in words is "sixty-eight million, one hundred eighteen thousand, four hundred seventy-eight".