68384847 has 4 divisors (see below), whose sum is σ = 91179800. Its totient is φ = 45589896.

The previous prime is 68384839. The next prime is 68384851. The reversal of 68384847 is 74848386.

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

It is not a de Polignac number, because 68384847 - 2³ = 68384839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68384796 and 68384805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68384947) 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, 11397472 + ... + 11397477.

It is an arithmetic number, because the mean of its divisors is an integer number (22794950).

Almost surely, 2^68384847 is an apocalyptic number.

68384847 is a deficient number, since it is larger than the sum of its proper divisors (22794953).

68384847 is a wasteful number, since it uses less digits than its factorization.

68384847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22794952.

The product of its digits is 1032192, while the sum is 48.

The square root of 68384847 is about 8269.5131053769. The cubic root of 68384847 is about 408.9340683571.

The spelling of 68384847 in words is "sixty-eight million, three hundred eighty-four thousand, eight hundred forty-seven".