68368549 has 2 divisors, whose sum is σ = 68368550. Its totient is φ = 68368548.

The previous prime is 68368537. The next prime is 68368589. The reversal of 68368549 is 94586386.

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., 61308900 + 7059649 = 7830^2 + 2657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68368549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68368519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34184274 + 34184275.

It is an arithmetic number, because the mean of its divisors is an integer number (34184275).

Almost surely, 2^68368549 is an apocalyptic number.

It is an amenable number.

68368549 is a deficient number, since it is larger than the sum of its proper divisors (1).

68368549 is an equidigital number, since it uses as much as digits as its factorization.

68368549 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 68368549 is about 8268.5276198366. The cubic root of 68368549 is about 408.9015790105.

The spelling of 68368549 in words is "sixty-eight million, three hundred sixty-eight thousand, five hundred forty-nine".