68544887 has 2 divisors, whose sum is σ = 68544888. Its totient is φ = 68544886.

The previous prime is 68544877. The next prime is 68544943. The reversal of 68544887 is 78844586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68544887 - 2⁴ = 68544871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68544857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272443 + 34272444.

It is an arithmetic number, because the mean of its divisors is an integer number (34272444).

Almost surely, 2^68544887 is an apocalyptic number.

68544887 is a deficient number, since it is larger than the sum of its proper divisors (1).

68544887 is an equidigital number, since it uses as much as digits as its factorization.

68544887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1720320, while the sum is 50.

The square root of 68544887 is about 8279.1839573716. The cubic root of 68544887 is about 409.2528271831.

The spelling of 68544887 in words is "sixty-eight million, five hundred forty-four thousand, eight hundred eighty-seven".