6660910913 has 16 divisors (see below), whose sum is σ = 7129841616. Its totient is φ = 6200678400.

The previous prime is 6660910873. The next prime is 6660910933. The reversal of 6660910913 is 3190190666.

It can be written as a sum of positive squares in 8 ways, for example, as 1435500544 + 5225410369 = 37888^2 + 72287^2 .

It is a cyclic number.

It is not a de Polignac number, because 6660910913 - 2¹⁴ = 6660894529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6660910933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3008795 + ... + 3011007.

It is an arithmetic number, because the mean of its divisors is an integer number (445615101).

Almost surely, 2^6660910913 is an apocalyptic number.

It is an amenable number.

6660910913 is a deficient number, since it is larger than the sum of its proper divisors (468930703).

6660910913 is a wasteful number, since it uses less digits than its factorization.

6660910913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 6660910913 is about 81614.4038329019. The cubic root of 6660910913 is about 1881.5302646534.

The spelling of 6660910913 in words is "six billion, six hundred sixty million, nine hundred ten thousand, nine hundred thirteen".