6644712463 has 8 divisors (see below), whose sum is σ = 7036438032. Its totient is φ = 6253082496.

The previous prime is 6644712401. The next prime is 6644712479. The reversal of 6644712463 is 3642174466.

It is a happy number.

6644712463 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6644712463 - 2²¹ = 6642615311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644712563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159456 + ... + 196762.

It is an arithmetic number, because the mean of its divisors is an integer number (879554754).

Almost surely, 2^6644712463 is an apocalyptic number.

6644712463 is a deficient number, since it is larger than the sum of its proper divisors (391725569).

6644712463 is a wasteful number, since it uses less digits than its factorization.

6644712463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47801.

The product of its digits is 580608, while the sum is 43.

The square root of 6644712463 is about 81515.1057350722. The cubic root of 6644712463 is about 1880.0038161044.

The spelling of 6644712463 in words is "six billion, six hundred forty-four million, seven hundred twelve thousand, four hundred sixty-three".