6463609844 has 24 divisors (see below), whose sum is σ = 11590914720. Its totient is φ = 3152134944.

The previous prime is 6463609843. The next prime is 6463609877. The reversal of 6463609844 is 4489063646.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6463609792 and 6463609801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463609843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95447 + ... + 148449.

It is an arithmetic number, because the mean of its divisors is an integer number (482954780).

Almost surely, 2^6463609844 is an apocalyptic number.

It is an amenable number.

6463609844 is a deficient number, since it is larger than the sum of its proper divisors (5127304876).

6463609844 is a wasteful number, since it uses less digits than its factorization.

6463609844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53759 (or 53757 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 50.

The square root of 6463609844 is about 80396.5785590407. The cubic root of 6463609844 is about 1862.7663238155.

The spelling of 6463609844 in words is "six billion, four hundred sixty-three million, six hundred nine thousand, eight hundred forty-four".