68895689 has 2 divisors, whose sum is σ = 68895690. Its totient is φ = 68895688.

The previous prime is 68895661. The next prime is 68895719. The reversal of 68895689 is 98659886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56505289 + 12390400 = 7517^2 + 3520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68895689 is a prime.

It is not a weakly prime, because it can be changed into another prime (68895289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34447844 + 34447845.

It is an arithmetic number, because the mean of its divisors is an integer number (34447845).

Almost surely, 2^68895689 is an apocalyptic number.

It is an amenable number.

68895689 is a deficient number, since it is larger than the sum of its proper divisors (1).

68895689 is an equidigital number, since it uses as much as digits as its factorization.

68895689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The square root of 68895689 is about 8300.3427037683. The cubic root of 68895689 is about 409.9498034918.

The spelling of 68895689 in words is "sixty-eight million, eight hundred ninety-five thousand, six hundred eighty-nine".