68073869 has 2 divisors, whose sum is σ = 68073870. Its totient is φ = 68073868.

The previous prime is 68073847. The next prime is 68073871. The reversal of 68073869 is 96837086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38502025 + 29571844 = 6205^2 + 5438^2 .

It is a cyclic number.

It is not a de Polignac number, because 68073869 - 2¹² = 68069773 is a prime.

It is a super-2 number, since 2×68073869² = 9268103281258322, which contains 22 as substring.

Together with 68073871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68073829) 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, 34036934 + 34036935.

It is an arithmetic number, because the mean of its divisors is an integer number (34036935).

Almost surely, 2^68073869 is an apocalyptic number.

It is an amenable number.

68073869 is a deficient number, since it is larger than the sum of its proper divisors (1).

68073869 is an equidigital number, since it uses as much as digits as its factorization.

68073869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 68073869 is about 8250.6890015319. The cubic root of 68073869 is about 408.3132546377.

The spelling of 68073869 in words is "sixty-eight million, seventy-three thousand, eight hundred sixty-nine".