67944871 has 2 divisors, whose sum is σ = 67944872. Its totient is φ = 67944870.

The previous prime is 67944847. The next prime is 67944881. The reversal of 67944871 is 17844976.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67944871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67944841) 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, 33972435 + 33972436.

It is an arithmetic number, because the mean of its divisors is an integer number (33972436).

Almost surely, 2^67944871 is an apocalyptic number.

67944871 is a deficient number, since it is larger than the sum of its proper divisors (1).

67944871 is an equidigital number, since it uses as much as digits as its factorization.

67944871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 67944871 is about 8242.8678868462. The cubic root of 67944871 is about 408.0551776426.

The spelling of 67944871 in words is "sixty-seven million, nine hundred forty-four thousand, eight hundred seventy-one".