68390011 has 2 divisors, whose sum is σ = 68390012. Its totient is φ = 68390010.

The previous prime is 68389943. The next prime is 68390041. The reversal of 68390011 is 11009386.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68390011 is a prime.

It is not a weakly prime, because it can be changed into another prime (68390041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34195005 + 34195006.

It is an arithmetic number, because the mean of its divisors is an integer number (34195006).

Almost surely, 2^68390011 is an apocalyptic number.

68390011 is a deficient number, since it is larger than the sum of its proper divisors (1).

68390011 is an equidigital number, since it uses as much as digits as its factorization.

68390011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 68390011 is about 8269.8253306826. The cubic root of 68390011 is about 408.9443614872.

Adding to 68390011 its reverse (11009386), we get a palindrome (79399397).

Subtracting from 68390011 its reverse (11009386), we obtain a square (57380625 = 7575²).

The spelling of 68390011 in words is "sixty-eight million, three hundred ninety thousand, eleven".