68767817 has 2 divisors, whose sum is σ = 68767818. Its totient is φ = 68767816.

The previous prime is 68767799. The next prime is 68767819. The reversal of 68767817 is 71876786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59428681 + 9339136 = 7709^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 68767817 - 2¹⁶ = 68702281 is a prime.

Together with 68767819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68767819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34383908 + 34383909.

It is an arithmetic number, because the mean of its divisors is an integer number (34383909).

Almost surely, 2^68767817 is an apocalyptic number.

It is an amenable number.

68767817 is a deficient number, since it is larger than the sum of its proper divisors (1).

68767817 is an equidigital number, since it uses as much as digits as its factorization.

68767817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 50.

The square root of 68767817 is about 8292.6363118130. The cubic root of 68767817 is about 409.6960209639.

The spelling of 68767817 in words is "sixty-eight million, seven hundred sixty-seven thousand, eight hundred seventeen".