68940271 has 2 divisors, whose sum is σ = 68940272. Its totient is φ = 68940270.

The previous prime is 68940257. The next prime is 68940281. The reversal of 68940271 is 17204986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68940271 - 2²⁵ = 35385839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68940271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68940281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34470135 + 34470136.

It is an arithmetic number, because the mean of its divisors is an integer number (34470136).

Almost surely, 2^68940271 is an apocalyptic number.

68940271 is a deficient number, since it is larger than the sum of its proper divisors (1).

68940271 is an equidigital number, since it uses as much as digits as its factorization.

68940271 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 37.

The square root of 68940271 is about 8303.0278212228. The cubic root of 68940271 is about 410.0382098040.

The spelling of 68940271 in words is "sixty-eight million, nine hundred forty thousand, two hundred seventy-one".