6431963 has 2 divisors, whose sum is σ = 6431964. Its totient is φ = 6431962.

The previous prime is 6431951. The next prime is 6431977. The reversal of 6431963 is 3691346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6431963 - 2²⁰ = 5383387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6431993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215981 + 3215982.

It is an arithmetic number, because the mean of its divisors is an integer number (3215982).

Almost surely, 2^6431963 is an apocalyptic number.

6431963 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431963 is an equidigital number, since it uses as much as digits as its factorization.

6431963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The square root of 6431963 is about 2536.1315028996. The cubic root of 6431963 is about 185.9721216937.

The spelling of 6431963 in words is "six million, four hundred thirty-one thousand, nine hundred sixty-three".