68686063 has 2 divisors, whose sum is σ = 68686064. Its totient is φ = 68686062.

The previous prime is 68686021. The next prime is 68686067. The reversal of 68686063 is 36068686.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68686063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68686067) 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, 34343031 + 34343032.

It is an arithmetic number, because the mean of its divisors is an integer number (34343032).

Almost surely, 2^68686063 is an apocalyptic number.

68686063 is a deficient number, since it is larger than the sum of its proper divisors (1).

68686063 is an equidigital number, since it uses as much as digits as its factorization.

68686063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 68686063 is about 8287.7055328963. The cubic root of 68686063 is about 409.5336021084.

The spelling of 68686063 in words is "sixty-eight million, six hundred eighty-six thousand, sixty-three".