6463332340 has 48 divisors (see below), whose sum is σ = 14396093712. Its totient is φ = 2429075456.

The previous prime is 6463332331. The next prime is 6463332361. The reversal of 6463332340 is 432333646.

It can be written as a sum of positive squares in 8 ways, for example, as 1513365604 + 4949966736 = 38902^2 + 70356^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 6463332296 and 6463332305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185592 + ... + 217648.

It is an arithmetic number, because the mean of its divisors is an integer number (299918619).

Almost surely, 2^6463332340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6463332340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7198046856).

6463332340 is an abundant number, since it is smaller than the sum of its proper divisors (7932761372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6463332340 is a wasteful number, since it uses less digits than its factorization.

6463332340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32676 (or 32674 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 34.

The square root of 6463332340 is about 80394.8526959282. The cubic root of 6463332340 is about 1862.7396652085.

Adding to 6463332340 its reverse (432333646), we get a palindrome (6895665986).

The spelling of 6463332340 in words is "six billion, four hundred sixty-three million, three hundred thirty-two thousand, three hundred forty".