67940893 has 2 divisors, whose sum is σ = 67940894. Its totient is φ = 67940892.

The previous prime is 67940879. The next prime is 67940921. The reversal of 67940893 is 39804976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54199044 + 13741849 = 7362^2 + 3707^2 .

It is a cyclic number.

It is not a de Polignac number, because 67940893 - 2⁵ = 67940861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67940833) 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, 33970446 + 33970447.

It is an arithmetic number, because the mean of its divisors is an integer number (33970447).

Almost surely, 2^67940893 is an apocalyptic number.

It is an amenable number.

67940893 is a deficient number, since it is larger than the sum of its proper divisors (1).

67940893 is an equidigital number, since it uses as much as digits as its factorization.

67940893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 67940893 is about 8242.6265838020. The cubic root of 67940893 is about 408.0472139550.

The spelling of 67940893 in words is "sixty-seven million, nine hundred forty thousand, eight hundred ninety-three".