63871271 has 2 divisors, whose sum is σ = 63871272. Its totient is φ = 63871270.

The previous prime is 63871267. The next prime is 63871279. The reversal of 63871271 is 17217836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63871271 - 2² = 63871267 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63871279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31935635 + 31935636.

It is an arithmetic number, because the mean of its divisors is an integer number (31935636).

Almost surely, 2^63871271 is an apocalyptic number.

63871271 is a deficient number, since it is larger than the sum of its proper divisors (1).

63871271 is an equidigital number, since it uses as much as digits as its factorization.

63871271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 63871271 is about 7991.9503877339. The cubic root of 63871271 is about 399.7316345736.

The spelling of 63871271 in words is "sixty-three million, eight hundred seventy-one thousand, two hundred seventy-one".