6646080528 has 120 divisors (see below), whose sum is σ = 19855068480. Its totient is φ = 2069141760.

The previous prime is 6646080517. The next prime is 6646080577. The reversal of 6646080528 is 8250806466.

6646080528 is a `hidden beast` number, since 6 + 6 + 46 + 0 + 80 + 528 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177150 + ... + 211362.

It is an arithmetic number, because the mean of its divisors is an integer number (165458904).

Almost surely, 2^6646080528 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 6646080528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9927534240).

6646080528 is an abundant number, since it is smaller than the sum of its proper divisors (13208987952).

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

6646080528 is a wasteful number, since it uses less digits than its factorization.

6646080528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34317 (or 34308 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 6646080528 is about 81523.4967846694. The cubic root of 6646080528 is about 1880.1328305121.

The spelling of 6646080528 in words is "six billion, six hundred forty-six million, eighty thousand, five hundred twenty-eight".