68817713 has 2 divisors, whose sum is σ = 68817714. Its totient is φ = 68817712.

The previous prime is 68817701. The next prime is 68817731. The reversal of 68817713 is 31771886.

Together with next prime (68817731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 4545424 = 8017^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 68817713 - 2¹² = 68813617 is a prime.

It is not a weakly prime, because it can be changed into another prime (68817733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34408856 + 34408857.

It is an arithmetic number, because the mean of its divisors is an integer number (34408857).

Almost surely, 2^68817713 is an apocalyptic number.

It is an amenable number.

68817713 is a deficient number, since it is larger than the sum of its proper divisors (1).

68817713 is an equidigital number, since it uses as much as digits as its factorization.

68817713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 68817713 is about 8295.6442185041. The cubic root of 68817713 is about 409.7950849905.

The spelling of 68817713 in words is "sixty-eight million, eight hundred seventeen thousand, seven hundred thirteen".