6605066880 has 96 divisors (see below), whose sum is σ = 22808141460. Its totient is φ = 1761349632.

The previous prime is 6605066869. The next prime is 6605066891. The reversal of 6605066880 is 886605066.

6605066880 is a `hidden beast` number, since 6 + 6 + 0 + 506 + 68 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (6605066869) and next prime (6605066891).

It can be written as a sum of positive squares in 2 ways, for example, as 6568778304 + 36288576 = 81048^2 + 6024^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567597 + ... + 579116.

Almost surely, 2^6605066880 is an apocalyptic number.

6605066880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6605066880 is an abundant number, since it is smaller than the sum of its proper divisors (16203074580).

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

6605066880 is a wasteful number, since it uses less digits than its factorization.

6605066880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146738 (or 1146723 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 6605066880 is about 81271.5625541923. The cubic root of 6605066880 is about 1876.2573497164.

The spelling of 6605066880 in words is "six billion, six hundred five million, sixty-six thousand, eight hundred eighty".