68159678 has 4 divisors (see below), whose sum is σ = 102239520. Its totient is φ = 34079838.

The previous prime is 68159659. The next prime is 68159737. The reversal of 68159678 is 87695186.

It is a happy number.

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, 17039918 + ... + 17039921.

It is an arithmetic number, because the mean of its divisors is an integer number (25559880).

Almost surely, 2^68159678 is an apocalyptic number.

68159678 is a deficient number, since it is larger than the sum of its proper divisors (34079842).

68159678 is a wasteful number, since it uses less digits than its factorization.

68159678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34079841.

The product of its digits is 725760, while the sum is 50.

The square root of 68159678 is about 8255.8874750084. The cubic root of 68159678 is about 408.4847459955.

The spelling of 68159678 in words is "sixty-eight million, one hundred fifty-nine thousand, six hundred seventy-eight".