6717165665 has 32 divisors (see below), whose sum is σ = 9922513920. Its totient is φ = 4262134464.

The previous prime is 6717165661. The next prime is 6717165671. The reversal of 6717165665 is 5665617176.

It is not a de Polignac number, because 6717165665 - 2² = 6717165661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6717165661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88859 + ... + 146048.

It is an arithmetic number, because the mean of its divisors is an integer number (310078560).

Almost surely, 2^6717165665 is an apocalyptic number.

It is an amenable number.

6717165665 is a deficient number, since it is larger than the sum of its proper divisors (3205348255).

6717165665 is a wasteful number, since it uses less digits than its factorization.

6717165665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234981.

The product of its digits is 1587600, while the sum is 50.

The square root of 6717165665 is about 81958.3166310778. The cubic root of 6717165665 is about 1886.8122467786.

The spelling of 6717165665 in words is "six billion, seven hundred seventeen million, one hundred sixty-five thousand, six hundred sixty-five".