68355811 has 2 divisors, whose sum is σ = 68355812. Its totient is φ = 68355810.

The previous prime is 68355809. The next prime is 68355817. The reversal of 68355811 is 11855386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68355811 - 2¹ = 68355809 is a prime.

Together with 68355809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68355817) 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, 34177905 + 34177906.

It is an arithmetic number, because the mean of its divisors is an integer number (34177906).

Almost surely, 2^68355811 is an apocalyptic number.

68355811 is a deficient number, since it is larger than the sum of its proper divisors (1).

68355811 is an equidigital number, since it uses as much as digits as its factorization.

68355811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The square root of 68355811 is about 8267.7573138064. The cubic root of 68355811 is about 408.8761827725.

The spelling of 68355811 in words is "sixty-eight million, three hundred fifty-five thousand, eight hundred eleven".