6505657271 has 2 divisors, whose sum is σ = 6505657272. Its totient is φ = 6505657270.

The previous prime is 6505657231. The next prime is 6505657339. The reversal of 6505657271 is 1727565056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6505657271 - 2²² = 6501462967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6505657231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252828635 + 3252828636.

It is an arithmetic number, because the mean of its divisors is an integer number (3252828636).

Almost surely, 2^6505657271 is an apocalyptic number.

6505657271 is a deficient number, since it is larger than the sum of its proper divisors (1).

6505657271 is an equidigital number, since it uses as much as digits as its factorization.

6505657271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 44.

The square root of 6505657271 is about 80657.6547576236. The cubic root of 6505657271 is about 1866.7968528711.

The spelling of 6505657271 in words is "six billion, five hundred five million, six hundred fifty-seven thousand, two hundred seventy-one".