67770797 has 2 divisors, whose sum is σ = 67770798. Its totient is φ = 67770796.

The previous prime is 67770779. The next prime is 67770839. The reversal of 67770797 is 79707776.

It is a happy number.

Together with previous prime (67770779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45549001 + 22221796 = 6749^2 + 4714^2 .

It is a cyclic number.

It is not a de Polignac number, because 67770797 - 2⁸ = 67770541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67770727) 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, 33885398 + 33885399.

It is an arithmetic number, because the mean of its divisors is an integer number (33885399).

Almost surely, 2^67770797 is an apocalyptic number.

It is an amenable number.

67770797 is a deficient number, since it is larger than the sum of its proper divisors (1).

67770797 is an equidigital number, since it uses as much as digits as its factorization.

67770797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907578, while the sum is 50.

The square root of 67770797 is about 8232.3020474227. The cubic root of 67770797 is about 407.7064020184.

The spelling of 67770797 in words is "sixty-seven million, seven hundred seventy thousand, seven hundred ninety-seven".