271820641 has 2 divisors, whose sum is σ = 271820642. Its totient is φ = 271820640.

The previous prime is 271820639. The next prime is 271820663. The reversal of 271820641 is 146028172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190550416 + 81270225 = 13804^2 + 9015^2 .

It is a cyclic number.

It is not a de Polignac number, because 271820641 - 2¹ = 271820639 is a prime.

Together with 271820639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (271820671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135910320 + 135910321.

It is an arithmetic number, because the mean of its divisors is an integer number (135910321).

Almost surely, 2^271820641 is an apocalyptic number.

It is an amenable number.

271820641 is a deficient number, since it is larger than the sum of its proper divisors (1).

271820641 is an equidigital number, since it uses as much as digits as its factorization.

271820641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 271820641 is about 16486.9839873762. The cubic root of 271820641 is about 647.7799138592.

The spelling of 271820641 in words is "two hundred seventy-one million, eight hundred twenty thousand, six hundred forty-one".