63868117 has 2 divisors, whose sum is σ = 63868118. Its totient is φ = 63868116.

The previous prime is 63868111. The next prime is 63868151. The reversal of 63868117 is 71186836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52403121 + 11464996 = 7239^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 63868117 - 2⁷ = 63867989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63868117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63868111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31934058 + 31934059.

It is an arithmetic number, because the mean of its divisors is an integer number (31934059).

Almost surely, 2^63868117 is an apocalyptic number.

It is an amenable number.

63868117 is a deficient number, since it is larger than the sum of its proper divisors (1).

63868117 is an equidigital number, since it uses as much as digits as its factorization.

63868117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 63868117 is about 7991.7530617506. The cubic root of 63868117 is about 399.7250548062.

The spelling of 63868117 in words is "sixty-three million, eight hundred sixty-eight thousand, one hundred seventeen".