6605207121 has 8 divisors (see below), whose sum is σ = 8826559200. Its totient is φ = 4393663232.

The previous prime is 6605207099. The next prime is 6605207197. The reversal of 6605207121 is 1217025066.

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

It is a cyclic number.

It is not a de Polignac number, because 6605207121 - 2¹⁴ = 6605190737 is a prime.

It is a super-2 number, since 2×6605207121² = 87257522222618217282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6605205121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450475 + ... + 2453168.

It is an arithmetic number, because the mean of its divisors is an integer number (1103319900).

Almost surely, 2^6605207121 is an apocalyptic number.

It is an amenable number.

6605207121 is a deficient number, since it is larger than the sum of its proper divisors (2221352079).

6605207121 is a wasteful number, since it uses less digits than its factorization.

6605207121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904095.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6605207121 is about 81272.4253421786. The cubic root of 6605207121 is about 1876.2706287313.

The spelling of 6605207121 in words is "six billion, six hundred five million, two hundred seven thousand, one hundred twenty-one".