671272271 has 2 divisors, whose sum is σ = 671272272. Its totient is φ = 671272270.

The previous prime is 671272229. The next prime is 671272279. The reversal of 671272271 is 172272176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671272271 - 2¹⁰ = 671271247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671272279) 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, 335636135 + 335636136.

It is an arithmetic number, because the mean of its divisors is an integer number (335636136).

Almost surely, 2^671272271 is an apocalyptic number.

671272271 is a deficient number, since it is larger than the sum of its proper divisors (1).

671272271 is an equidigital number, since it uses as much as digits as its factorization.

671272271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16464, while the sum is 35.

The square root of 671272271 is about 25908.9226136480. The cubic root of 671272271 is about 875.5875329134.

The spelling of 671272271 in words is "six hundred seventy-one million, two hundred seventy-two thousand, two hundred seventy-one".