67148771 has 2 divisors, whose sum is σ = 67148772. Its totient is φ = 67148770.

The previous prime is 67148749. The next prime is 67148773. The reversal of 67148771 is 17784176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67148771 - 2¹⁸ = 66886627 is a prime.

It is a Sophie Germain prime.

Together with 67148773, 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 (67148773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33574385 + 33574386.

It is an arithmetic number, because the mean of its divisors is an integer number (33574386).

Almost surely, 2^67148771 is an apocalyptic number.

67148771 is a deficient number, since it is larger than the sum of its proper divisors (1).

67148771 is an equidigital number, since it uses as much as digits as its factorization.

67148771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 41.

The square root of 67148771 is about 8194.4353679799. The cubic root of 67148771 is about 406.4552050158.

The spelling of 67148771 in words is "sixty-seven million, one hundred forty-eight thousand, seven hundred seventy-one".