68723839 has 8 divisors (see below), whose sum is σ = 71805312. Its totient is φ = 65650200.

The previous prime is 68723827. The next prime is 68723887. The reversal of 68723839 is 93832786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68723839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68723819) 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 7 ways as a sum of consecutive naturals, for example, 22752 + ... + 25594.

It is an arithmetic number, because the mean of its divisors is an integer number (8975664).

Almost surely, 2^68723839 is an apocalyptic number.

68723839 is a deficient number, since it is larger than the sum of its proper divisors (3081473).

68723839 is a wasteful number, since it uses less digits than its factorization.

68723839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its digits is 435456, while the sum is 46.

The square root of 68723839 is about 8289.9842581274. The cubic root of 68723839 is about 409.6086668565.

The spelling of 68723839 in words is "sixty-eight million, seven hundred twenty-three thousand, eight hundred thirty-nine".