68112713 has 4 divisors (see below), whose sum is σ = 68134020. Its totient is φ = 68091408.

The previous prime is 68112703. The next prime is 68112757. The reversal of 68112713 is 31721186.

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 49519369 + 18593344 = 7037^2 + 4312^2 .

It is a cyclic number.

It is not a de Polignac number, because 68112713 - 2⁴ = 68112697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68112703) 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, 4778 + ... + 12611.

It is an arithmetic number, because the mean of its divisors is an integer number (17033505).

Almost surely, 2^68112713 is an apocalyptic number.

It is an amenable number.

68112713 is a deficient number, since it is larger than the sum of its proper divisors (21307).

68112713 is a wasteful number, since it uses less digits than its factorization.

68112713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21306.

The product of its digits is 2016, while the sum is 29.

The square root of 68112713 is about 8253.0426510469. The cubic root of 68112713 is about 408.3909031515.

Adding to 68112713 its reverse (31721186), we get a palindrome (99833899).

The spelling of 68112713 in words is "sixty-eight million, one hundred twelve thousand, seven hundred thirteen".