67880191 has 2 divisors, whose sum is σ = 67880192. Its totient is φ = 67880190.

The previous prime is 67880143. The next prime is 67880207. The reversal of 67880191 is 19108876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67880191 - 2¹⁹ = 67355903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67880591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33940095 + 33940096.

It is an arithmetic number, because the mean of its divisors is an integer number (33940096).

Almost surely, 2^67880191 is an apocalyptic number.

67880191 is a deficient number, since it is larger than the sum of its proper divisors (1).

67880191 is an equidigital number, since it uses as much as digits as its factorization.

67880191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 67880191 is about 8238.9435609185. The cubic root of 67880191 is about 407.9256540653.

The spelling of 67880191 in words is "sixty-seven million, eight hundred eighty thousand, one hundred ninety-one".