68384165 has 4 divisors (see below), whose sum is σ = 82061004. Its totient is φ = 54707328.

The previous prime is 68384159. The next prime is 68384189. The reversal of 68384165 is 56148386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21077281 + 47306884 = 4591^2 + 6878^2 .

It is a cyclic number.

It is not a de Polignac number, because 68384165 - 2²² = 64189861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 6838412 + ... + 6838421.

It is an arithmetic number, because the mean of its divisors is an integer number (20515251).

Almost surely, 2^68384165 is an apocalyptic number.

It is an amenable number.

68384165 is a deficient number, since it is larger than the sum of its proper divisors (13676839).

68384165 is a wasteful number, since it uses less digits than its factorization.

68384165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13676838.

The product of its digits is 138240, while the sum is 41.

The square root of 68384165 is about 8269.4718694727. The cubic root of 68384165 is about 408.9327089236.

It can be divided in two parts, 683 and 84165, that added together give a palindrome (84848).

The spelling of 68384165 in words is "sixty-eight million, three hundred eighty-four thousand, one hundred sixty-five".