67891 has 2 divisors, whose sum is σ = 67892. Its totient is φ = 67890.

The previous prime is 67883. The next prime is 67901. The reversal of 67891 is 19876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67891 - 2³ = 67883 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (67801) 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, 33945 + 33946.

It is an arithmetic number, because the mean of its divisors is an integer number (33946).

2⁶⁷⁸⁹¹ is an apocalyptic number.

67891 is a deficient number, since it is larger than the sum of its proper divisors (1).

67891 is an equidigital number, since it uses as much as digits as its factorization.

67891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 67891 is about 260.5590144286. The cubic root of 67891 is about 40.7947305126.

The spelling of 67891 in words is "sixty-seven thousand, eight hundred ninety-one".