68003839 has 4 divisors (see below), whose sum is σ = 68021824. Its totient is φ = 67985856.

The previous prime is 68003833. The next prime is 68003849. The reversal of 68003839 is 93830086.

It is a happy number.

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 68003839 - 2¹⁷ = 67872767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68003798 and 68003807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68003833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (17005456).

Almost surely, 2^68003839 is an apocalyptic number.

68003839 is a deficient number, since it is larger than the sum of its proper divisors (17985).

68003839 is a wasteful number, since it uses less digits than its factorization.

68003839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17984.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68003839 is about 8246.4440215162. Note that the first 3 decimals coincide. The cubic root of 68003839 is about 408.1731911619.

The spelling of 68003839 in words is "sixty-eight million, three thousand, eight hundred thirty-nine".