68445029 has 2 divisors, whose sum is σ = 68445030. Its totient is φ = 68445028.

The previous prime is 68445023. The next prime is 68445053. The reversal of 68445029 is 92054486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 2500 = 8273^2 + 50^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68445029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68444983 and 68445001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68445023) 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, 34222514 + 34222515.

It is an arithmetic number, because the mean of its divisors is an integer number (34222515).

Almost surely, 2^68445029 is an apocalyptic number.

It is an amenable number.

68445029 is a deficient number, since it is larger than the sum of its proper divisors (1).

68445029 is an equidigital number, since it uses as much as digits as its factorization.

68445029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 68445029 is about 8273.1510925403. The cubic root of 68445029 is about 409.0539938242.

The spelling of 68445029 in words is "sixty-eight million, four hundred forty-five thousand, twenty-nine".