68239983 has 16 divisors (see below), whose sum is σ = 104142080. Its totient is φ = 38935296.

The previous prime is 68239967. The next prime is 68240033. The reversal of 68239983 is 38993286.

It is not a de Polignac number, because 68239983 - 2⁴ = 68239967 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68239903) 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 15 ways as a sum of consecutive naturals, for example, 14463 + ... + 18591.

It is an arithmetic number, because the mean of its divisors is an integer number (6508880).

Almost surely, 2^68239983 is an apocalyptic number.

68239983 is a deficient number, since it is larger than the sum of its proper divisors (35902097).

68239983 is a wasteful number, since it uses less digits than its factorization.

68239983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4926.

The product of its digits is 559872, while the sum is 48.

The square root of 68239983 is about 8260.7495422631. The cubic root of 68239983 is about 408.6451071458.

The spelling of 68239983 in words is "sixty-eight million, two hundred thirty-nine thousand, nine hundred eighty-three".