68380073 has 2 divisors, whose sum is σ = 68380074. Its totient is φ = 68380072.

The previous prime is 68380063. The next prime is 68380099. The reversal of 68380073 is 37008386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 20866624 = 6893^2 + 4568^2 .

It is a cyclic number.

It is not a de Polignac number, because 68380073 - 2¹⁴ = 68363689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68380063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34190036 + 34190037.

It is an arithmetic number, because the mean of its divisors is an integer number (34190037).

Almost surely, 2^68380073 is an apocalyptic number.

It is an amenable number.

68380073 is a deficient number, since it is larger than the sum of its proper divisors (1).

68380073 is an equidigital number, since it uses as much as digits as its factorization.

68380073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 68380073 is about 8269.2244497292. The cubic root of 68380073 is about 408.9245521326.

The spelling of 68380073 in words is "sixty-eight million, three hundred eighty thousand, seventy-three".