6466660480 has 128 divisors (see below), whose sum is σ = 17754168960. Its totient is φ = 2206310400.

The previous prime is 6466660463. The next prime is 6466660493. The reversal of 6466660480 is 840666646.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 6466660480.

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, 941860 + ... + 948700.

It is an arithmetic number, because the mean of its divisors is an integer number (138704445).

Almost surely, 2^6466660480 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 6466660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8877084480).

6466660480 is an abundant number, since it is smaller than the sum of its proper divisors (11287508480).

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

6466660480 is a wasteful number, since it uses less digits than its factorization.

6466660480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 46.

The square root of 6466660480 is about 80415.5487452520. The cubic root of 6466660480 is about 1863.0593349123.

The spelling of 6466660480 in words is "six billion, four hundred sixty-six million, six hundred sixty thousand, four hundred eighty".