6617710857 has 16 divisors (see below), whose sum is σ = 9380976768. Its totient is φ = 4140364800.

The previous prime is 6617710817. The next prime is 6617710859. The reversal of 6617710857 is 7580177166.

It is a happy number.

It is not a de Polignac number, because 6617710857 - 2⁸ = 6617710601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6617710859) 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, 901144 + ... + 908457.

It is an arithmetic number, because the mean of its divisors is an integer number (586311048).

Almost surely, 2^6617710857 is an apocalyptic number.

It is an amenable number.

6617710857 is a deficient number, since it is larger than the sum of its proper divisors (2763265911).

6617710857 is a wasteful number, since it uses less digits than its factorization.

6617710857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809680.

The product of its (nonzero) digits is 493920, while the sum is 48.

The square root of 6617710857 is about 81349.3138078005. The cubic root of 6617710857 is about 1877.4538166882.

The spelling of 6617710857 in words is "six billion, six hundred seventeen million, seven hundred ten thousand, eight hundred fifty-seven".