68384072 has 8 divisors (see below), whose sum is σ = 128220150. Its totient is φ = 34192032.

The previous prime is 68384051. The next prime is 68384077. The reversal of 68384072 is 27048386.

It can be written as a sum of positive squares in only one way, i.e., 37625956 + 30758116 = 6134^2 + 5546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (68384077) 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 as a sum of consecutive naturals, namely, 4273997 + ... + 4274012.

Almost surely, 2^68384072 is an apocalyptic number.

It is an amenable number.

68384072 is a deficient number, since it is larger than the sum of its proper divisors (59836078).

68384072 is a wasteful number, since it uses less digits than its factorization.

68384072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8548015 (or 8548011 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 68384072 is about 8269.4662463789. The cubic root of 68384072 is about 408.9325235456.

The spelling of 68384072 in words is "sixty-eight million, three hundred eighty-four thousand, seventy-two".