68367389 has 2 divisors, whose sum is σ = 68367390. Its totient is φ = 68367388.

The previous prime is 68367367. The next prime is 68367401. The reversal of 68367389 is 98376386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61387225 + 6980164 = 7835^2 + 2642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68367389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68367359) 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, 34183694 + 34183695.

It is an arithmetic number, because the mean of its divisors is an integer number (34183695).

Almost surely, 2^68367389 is an apocalyptic number.

It is an amenable number.

68367389 is a deficient number, since it is larger than the sum of its proper divisors (1).

68367389 is an equidigital number, since it uses as much as digits as its factorization.

68367389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 68367389 is about 8268.4574740395. The cubic root of 68367389 is about 408.8992664047.

The spelling of 68367389 in words is "sixty-eight million, three hundred sixty-seven thousand, three hundred eighty-nine".