68911211 has 2 divisors, whose sum is σ = 68911212. Its totient is φ = 68911210.

The previous prime is 68911207. The next prime is 68911231. The reversal of 68911211 is 11211986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68911211 - 2² = 68911207 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68911231) 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, 34455605 + 34455606.

It is an arithmetic number, because the mean of its divisors is an integer number (34455606).

Almost surely, 2^68911211 is an apocalyptic number.

68911211 is a deficient number, since it is larger than the sum of its proper divisors (1).

68911211 is an equidigital number, since it uses as much as digits as its factorization.

68911211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 29.

The square root of 68911211 is about 8301.2776727441. The cubic root of 68911211 is about 409.9805880161.

The spelling of 68911211 in words is "sixty-eight million, nine hundred eleven thousand, two hundred eleven".