68041969 has 2 divisors, whose sum is σ = 68041970. Its totient is φ = 68041968.

The previous prime is 68041951. The next prime is 68041991. The reversal of 68041969 is 96914086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39526369 + 28515600 = 6287^2 + 5340^2 .

It is a cyclic number.

It is not a de Polignac number, because 68041969 - 2⁵ = 68041937 is a prime.

It is a super-2 number, since 2×68041969² = 9259419090793922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68041949) 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, 34020984 + 34020985.

It is an arithmetic number, because the mean of its divisors is an integer number (34020985).

Almost surely, 2^68041969 is an apocalyptic number.

It is an amenable number.

68041969 is a deficient number, since it is larger than the sum of its proper divisors (1).

68041969 is an equidigital number, since it uses as much as digits as its factorization.

68041969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 68041969 is about 8248.7556031198. The cubic root of 68041969 is about 408.2494649725.

The spelling of 68041969 in words is "sixty-eight million, forty-one thousand, nine hundred sixty-nine".