68375969 has 2 divisors, whose sum is σ = 68375970. Its totient is φ = 68375968.

The previous prime is 68375959. The next prime is 68375999. The reversal of 68375969 is 96957386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 18490000 = 7063^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 68375969 - 2⁴ = 68375953 is a prime.

It is a super-2 number, since 2×68375969² = 9350546273377922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68375969.

It is not a weakly prime, because it can be changed into another prime (68375959) 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, 34187984 + 34187985.

It is an arithmetic number, because the mean of its divisors is an integer number (34187985).

Almost surely, 2^68375969 is an apocalyptic number.

It is an amenable number.

68375969 is a deficient number, since it is larger than the sum of its proper divisors (1).

68375969 is an equidigital number, since it uses as much as digits as its factorization.

68375969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 53.

The square root of 68375969 is about 8268.9762969790. The cubic root of 68375969 is about 408.9163710945.

The spelling of 68375969 in words is "sixty-eight million, three hundred seventy-five thousand, nine hundred sixty-nine".