67768411 has 2 divisors, whose sum is σ = 67768412. Its totient is φ = 67768410.

The previous prime is 67768369. The next prime is 67768417. The reversal of 67768411 is 11486776.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67768411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67768417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33884205 + 33884206.

It is an arithmetic number, because the mean of its divisors is an integer number (33884206).

Almost surely, 2^67768411 is an apocalyptic number.

67768411 is a deficient number, since it is larger than the sum of its proper divisors (1).

67768411 is an equidigital number, since it uses as much as digits as its factorization.

67768411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 67768411 is about 8232.1571292098. The cubic root of 67768411 is about 407.7016172688.

The spelling of 67768411 in words is "sixty-seven million, seven hundred sixty-eight thousand, four hundred eleven".