68207291 has 2 divisors, whose sum is σ = 68207292. Its totient is φ = 68207290.

The previous prime is 68207287. The next prime is 68207297. The reversal of 68207291 is 19270286.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68207291 - 2² = 68207287 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68207297) 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, 34103645 + 34103646.

It is an arithmetic number, because the mean of its divisors is an integer number (34103646).

Almost surely, 2^68207291 is an apocalyptic number.

68207291 is a deficient number, since it is larger than the sum of its proper divisors (1).

68207291 is an equidigital number, since it uses as much as digits as its factorization.

68207291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 68207291 is about 8258.7705501485. The cubic root of 68207291 is about 408.5798396432.

The spelling of 68207291 in words is "sixty-eight million, two hundred seven thousand, two hundred ninety-one".