68289511 has 2 divisors, whose sum is σ = 68289512. Its totient is φ = 68289510.

The previous prime is 68289479. The next prime is 68289541. The reversal of 68289511 is 11598286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68289511 - 2⁵ = 68289479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68289541) 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, 34144755 + 34144756.

It is an arithmetic number, because the mean of its divisors is an integer number (34144756).

Almost surely, 2^68289511 is an apocalyptic number.

68289511 is a deficient number, since it is larger than the sum of its proper divisors (1).

68289511 is an equidigital number, since it uses as much as digits as its factorization.

68289511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 40.

The square root of 68289511 is about 8263.7467894412. The cubic root of 68289511 is about 408.7439469531.

The spelling of 68289511 in words is "sixty-eight million, two hundred eighty-nine thousand, five hundred eleven".