6459644576 has 96 divisors (see below), whose sum is σ = 16545005568. Its totient is φ = 2407299840.

The previous prime is 6459644549. The next prime is 6459644663. The reversal of 6459644576 is 6754469546.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 320 + ... + 113663.

It is an arithmetic number, because the mean of its divisors is an integer number (172343808).

Almost surely, 2^6459644576 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 6459644576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8272502784).

6459644576 is an abundant number, since it is smaller than the sum of its proper divisors (10085360992).

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

6459644576 is a wasteful number, since it uses less digits than its factorization.

6459644576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114034 (or 114026 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The square root of 6459644576 is about 80371.9140993917. The cubic root of 6459644576 is about 1862.3853252279.

The spelling of 6459644576 in words is "six billion, four hundred fifty-nine million, six hundred forty-four thousand, five hundred seventy-six".