68378753 has 2 divisors, whose sum is σ = 68378754. Its totient is φ = 68378752.

The previous prime is 68378683. The next prime is 68378759. The reversal of 68378753 is 35787386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68178049 + 200704 = 8257^2 + 448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68378753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68378698 and 68378707.

It is not a weakly prime, because it can be changed into another prime (68378759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34189376 + 34189377.

It is an arithmetic number, because the mean of its divisors is an integer number (34189377).

Almost surely, 2^68378753 is an apocalyptic number.

It is an amenable number.

68378753 is a deficient number, since it is larger than the sum of its proper divisors (1).

68378753 is an equidigital number, since it uses as much as digits as its factorization.

68378753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 68378753 is about 8269.1446353296. The cubic root of 68378753 is about 408.9219208403.

The spelling of 68378753 in words is "sixty-eight million, three hundred seventy-eight thousand, seven hundred fifty-three".