68051449 has 2 divisors, whose sum is σ = 68051450. Its totient is φ = 68051448.

The previous prime is 68051443. The next prime is 68051491. The reversal of 68051449 is 94415086.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 11696400 = 7507^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 68051449 - 2⁹ = 68050937 is a prime.

It is not a weakly prime, because it can be changed into another prime (68051443) 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, 34025724 + 34025725.

It is an arithmetic number, because the mean of its divisors is an integer number (34025725).

Almost surely, 2^68051449 is an apocalyptic number.

It is an amenable number.

68051449 is a deficient number, since it is larger than the sum of its proper divisors (1).

68051449 is an equidigital number, since it uses as much as digits as its factorization.

68051449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68051449 is about 8249.3302152357. The cubic root of 68051449 is about 408.2684239830.

The spelling of 68051449 in words is "sixty-eight million, fifty-one thousand, four hundred forty-nine".