68895643 has 2 divisors, whose sum is σ = 68895644. Its totient is φ = 68895642.

The previous prime is 68895637. The next prime is 68895661. The reversal of 68895643 is 34659886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68895643 is a prime.

It is not a weakly prime, because it can be changed into another prime (68895623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34447821 + 34447822.

It is an arithmetic number, because the mean of its divisors is an integer number (34447822).

Almost surely, 2^68895643 is an apocalyptic number.

68895643 is a deficient number, since it is larger than the sum of its proper divisors (1).

68895643 is an equidigital number, since it uses as much as digits as its factorization.

68895643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 49.

The square root of 68895643 is about 8300.3399327979. The cubic root of 68895643 is about 409.9497122539.

The spelling of 68895643 in words is "sixty-eight million, eight hundred ninety-five thousand, six hundred forty-three".