6463643 has 2 divisors, whose sum is σ = 6463644. Its totient is φ = 6463642.

The previous prime is 6463637. The next prime is 6463649. The reversal of 6463643 is 3463646.

It is a balanced prime because it is at equal distance from previous prime (6463637) and next prime (6463649).

It is a cyclic number.

It is not a de Polignac number, because 6463643 - 2¹⁸ = 6201499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6463649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231821 + 3231822.

It is an arithmetic number, because the mean of its divisors is an integer number (3231822).

Almost surely, 2^6463643 is an apocalyptic number.

6463643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463643 is an equidigital number, since it uses as much as digits as its factorization.

6463643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 6463643 is about 2542.3695640091. The cubic root of 6463643 is about 186.2769508918.

The spelling of 6463643 in words is "six million, four hundred sixty-three thousand, six hundred forty-three".