68039197 has 2 divisors, whose sum is σ = 68039198. Its totient is φ = 68039196.

The previous prime is 68039183. The next prime is 68039207. The reversal of 68039197 is 79193086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60388441 + 7650756 = 7771^2 + 2766^2 .

It is a cyclic number.

It is not a de Polignac number, because 68039197 - 2¹¹ = 68037149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68033197) 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, 34019598 + 34019599.

It is an arithmetic number, because the mean of its divisors is an integer number (34019599).

Almost surely, 2^68039197 is an apocalyptic number.

It is an amenable number.

68039197 is a deficient number, since it is larger than the sum of its proper divisors (1).

68039197 is an equidigital number, since it uses as much as digits as its factorization.

68039197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 68039197 is about 8248.5875760642. The cubic root of 68039197 is about 408.2439209291.

The spelling of 68039197 in words is "sixty-eight million, thirty-nine thousand, one hundred ninety-seven".