6463646963 has 2 divisors, whose sum is σ = 6463646964. Its totient is φ = 6463646962.

The previous prime is 6463646947. The next prime is 6463646977. The reversal of 6463646963 is 3696463646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6463646963 - 2⁴ = 6463646947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6463646363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231823481 + 3231823482.

It is an arithmetic number, because the mean of its divisors is an integer number (3231823482).

Almost surely, 2^6463646963 is an apocalyptic number.

6463646963 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463646963 is an equidigital number, since it uses as much as digits as its factorization.

6463646963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 53.

The square root of 6463646963 is about 80396.8094080853. The cubic root of 6463646963 is about 1862.7698896191.

The spelling of 6463646963 in words is "six billion, four hundred sixty-three million, six hundred forty-six thousand, nine hundred sixty-three".