6463566671 has 2 divisors, whose sum is σ = 6463566672. Its totient is φ = 6463566670.

The previous prime is 6463566569. The next prime is 6463566677. The reversal of 6463566671 is 1766653646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6463566671 - 2¹⁸ = 6463304527 is a prime.

It is a super-2 number, since 2×6463566671² = 83555388220924044482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6463566677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231783335 + 3231783336.

It is an arithmetic number, because the mean of its divisors is an integer number (3231783336).

Almost surely, 2^6463566671 is an apocalyptic number.

6463566671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463566671 is an equidigital number, since it uses as much as digits as its factorization.

6463566671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 50.

The square root of 6463566671 is about 80396.3100583603. The cubic root of 6463566671 is about 1862.7621764225.

The spelling of 6463566671 in words is "six billion, four hundred sixty-three million, five hundred sixty-six thousand, six hundred seventy-one".