6605358881 has 8 divisors (see below), whose sum is σ = 7400599104. Its totient is φ = 5842577520.

The previous prime is 6605358869. The next prime is 6605358887. The reversal of 6605358881 is 1888535066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6605358881 is a prime.

It is a super-2 number, since 2×6605358881² = 87261531893611144322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6605358887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8114285 + ... + 8115098.

It is an arithmetic number, because the mean of its divisors is an integer number (925074888).

Almost surely, 2^6605358881 is an apocalyptic number.

It is an amenable number.

6605358881 is a deficient number, since it is larger than the sum of its proper divisors (795240223).

6605358881 is a wasteful number, since it uses less digits than its factorization.

6605358881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16229431.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The square root of 6605358881 is about 81273.3589868168. The cubic root of 6605358881 is about 1876.2849982353.

The spelling of 6605358881 in words is "six billion, six hundred five million, three hundred fifty-eight thousand, eight hundred eighty-one".