68743057 has 2 divisors, whose sum is σ = 68743058. Its totient is φ = 68743056.

The previous prime is 68743043. The next prime is 68743061. The reversal of 68743057 is 75034786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36978561 + 31764496 = 6081^2 + 5636^2 .

It is a cyclic number.

It is not a de Polignac number, because 68743057 - 2¹¹ = 68741009 is a prime.

It is not a weakly prime, because it can be changed into another prime (68743097) 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, 34371528 + 34371529.

It is an arithmetic number, because the mean of its divisors is an integer number (34371529).

Almost surely, 2^68743057 is an apocalyptic number.

It is an amenable number.

68743057 is a deficient number, since it is larger than the sum of its proper divisors (1).

68743057 is an equidigital number, since it uses as much as digits as its factorization.

68743057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 68743057 is about 8291.1432866644. The cubic root of 68743057 is about 409.6468444177.

The spelling of 68743057 in words is "sixty-eight million, seven hundred forty-three thousand, fifty-seven".