67768417 has 2 divisors, whose sum is σ = 67768418. Its totient is φ = 67768416.

The previous prime is 67768411. The next prime is 67768429. The reversal of 67768417 is 71486776.

67768417 is nontrivially palindromic in base 6.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63107136 + 4661281 = 7944^2 + 2159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67768417 is a prime.

It is not a weakly prime, because it can be changed into another prime (67768411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33884208 + 33884209.

It is an arithmetic number, because the mean of its divisors is an integer number (33884209).

Almost surely, 2^67768417 is an apocalyptic number.

It is an amenable number.

67768417 is a deficient number, since it is larger than the sum of its proper divisors (1).

67768417 is an equidigital number, since it uses as much as digits as its factorization.

67768417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 67768417 is about 8232.1574936343. The cubic root of 67768417 is about 407.7016293010.

The spelling of 67768417 in words is "sixty-seven million, seven hundred sixty-eight thousand, four hundred seventeen".