68543753 has 2 divisors, whose sum is σ = 68543754. Its totient is φ = 68543752.

The previous prime is 68543743. The next prime is 68543777. The reversal of 68543753 is 35734586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49603849 + 18939904 = 7043^2 + 4352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68543753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68543753.

It is not a weakly prime, because it can be changed into another prime (68543723) 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, 34271876 + 34271877.

It is an arithmetic number, because the mean of its divisors is an integer number (34271877).

Almost surely, 2^68543753 is an apocalyptic number.

It is an amenable number.

68543753 is a deficient number, since it is larger than the sum of its proper divisors (1).

68543753 is an equidigital number, since it uses as much as digits as its factorization.

68543753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 41.

The square root of 68543753 is about 8279.1154720779. The cubic root of 68543753 is about 409.2505702909.

It can be divided in two parts, 68543 and 753, that added together give a palindrome (69296).

The spelling of 68543753 in words is "sixty-eight million, five hundred forty-three thousand, seven hundred fifty-three".