68116939 has 4 divisors (see below), whose sum is σ = 74309400. Its totient is φ = 61924480.

The previous prime is 68116913. The next prime is 68116973. The reversal of 68116939 is 93961186.

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

It is a cyclic number.

It is not a de Polignac number, because 68116939 - 2⁹ = 68116427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68116895 and 68116904.

It is not an unprimeable number, because it can be changed into a prime (68116999) 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, 3096214 + ... + 3096235.

It is an arithmetic number, because the mean of its divisors is an integer number (18577350).

Almost surely, 2^68116939 is an apocalyptic number.

68116939 is a deficient number, since it is larger than the sum of its proper divisors (6192461).

68116939 is a wasteful number, since it uses less digits than its factorization.

68116939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192460.

The product of its digits is 69984, while the sum is 43.

The square root of 68116939 is about 8253.2986738637. The cubic root of 68116939 is about 408.3993490748.

The spelling of 68116939 in words is "sixty-eight million, one hundred sixteen thousand, nine hundred thirty-nine".