68306279 has 2 divisors, whose sum is σ = 68306280. Its totient is φ = 68306278.

The previous prime is 68306269. The next prime is 68306309. The reversal of 68306279 is 97260386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68306279 - 2⁴ = 68306263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68306269) 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, 34153139 + 34153140.

It is an arithmetic number, because the mean of its divisors is an integer number (34153140).

Almost surely, 2^68306279 is an apocalyptic number.

68306279 is a deficient number, since it is larger than the sum of its proper divisors (1).

68306279 is an equidigital number, since it uses as much as digits as its factorization.

68306279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 68306279 is about 8264.7612790691. The cubic root of 68306279 is about 408.7773989309. Note that the first 3 decimals are identical.

The spelling of 68306279 in words is "sixty-eight million, three hundred six thousand, two hundred seventy-nine".