68840063 has 2 divisors, whose sum is σ = 68840064. Its totient is φ = 68840062.

The previous prime is 68840039. The next prime is 68840069. The reversal of 68840063 is 36004886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68840063 - 2⁸ = 68839807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68840069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34420031 + 34420032.

It is an arithmetic number, because the mean of its divisors is an integer number (34420032).

Almost surely, 2^68840063 is an apocalyptic number.

68840063 is a deficient number, since it is larger than the sum of its proper divisors (1).

68840063 is an equidigital number, since it uses as much as digits as its factorization.

68840063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 68840063 is about 8296.9912016345. The cubic root of 68840063 is about 409.8394433803.

The spelling of 68840063 in words is "sixty-eight million, eight hundred forty thousand, sixty-three".