68581343 has 2 divisors, whose sum is σ = 68581344. Its totient is φ = 68581342.

The previous prime is 68581339. The next prime is 68581361. The reversal of 68581343 is 34318586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68581343 - 2² = 68581339 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 68581297 and 68581306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68581363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34290671 + 34290672.

It is an arithmetic number, because the mean of its divisors is an integer number (34290672).

Almost surely, 2^68581343 is an apocalyptic number.

68581343 is a deficient number, since it is larger than the sum of its proper divisors (1).

68581343 is an equidigital number, since it uses as much as digits as its factorization.

68581343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 68581343 is about 8281.3853309697. The cubic root of 68581343 is about 409.3253688292.

It can be divided in two parts, 685 and 81343, that added together give a palindrome (82028).

The spelling of 68581343 in words is "sixty-eight million, five hundred eighty-one thousand, three hundred forty-three".