68317072 has 20 divisors (see below), whose sum is σ = 134536156. Its totient is φ = 33598080.

The previous prime is 68317063. The next prime is 68317079. The reversal of 68317072 is 27071386.

It can be written as a sum of positive squares in 2 ways, for example, as 26378496 + 41938576 = 5136^2 + 6476^2 .

It is not an unprimeable number, because it can be changed into a prime (68317079) 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 in 3 ways as a sum of consecutive naturals, for example, 34023 + ... + 35974.

Almost surely, 2^68317072 is an apocalyptic number.

It is an amenable number.

68317072 is a deficient number, since it is larger than the sum of its proper divisors (66219084).

68317072 is a wasteful number, since it uses less digits than its factorization.

68317072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70066 (or 70060 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 68317072 is about 8265.4142061968. The cubic root of 68317072 is about 408.7989279527.

The spelling of 68317072 in words is "sixty-eight million, three hundred seventeen thousand, seventy-two".