681327271 has 2 divisors, whose sum is σ = 681327272. Its totient is φ = 681327270.

The previous prime is 681327263. The next prime is 681327313. The reversal of 681327271 is 172723186.

681327271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681327271 - 2³ = 681327263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 681327271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681327211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340663635 + 340663636.

It is an arithmetic number, because the mean of its divisors is an integer number (340663636).

Almost surely, 2^681327271 is an apocalyptic number.

681327271 is a deficient number, since it is larger than the sum of its proper divisors (1).

681327271 is an equidigital number, since it uses as much as digits as its factorization.

681327271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 681327271 is about 26102.2464742022. The cubic root of 681327271 is about 879.9376983269.

The spelling of 681327271 in words is "six hundred eighty-one million, three hundred twenty-seven thousand, two hundred seventy-one".