2166730017 has 4 divisors (see below), whose sum is σ = 2888973360. Its totient is φ = 1444486676.

The previous prime is 2166730001. The next prime is 2166730043. The reversal of 2166730017 is 7100376612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2166730017 - 2⁴ = 2166730001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2166730017.

It is not an unprimeable number, because it can be changed into a prime (2166730057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361121667 + ... + 361121672.

It is an arithmetic number, because the mean of its divisors is an integer number (722243340).

Almost surely, 2^2166730017 is an apocalyptic number.

It is an amenable number.

2166730017 is a deficient number, since it is larger than the sum of its proper divisors (722243343).

2166730017 is an equidigital number, since it uses as much as digits as its factorization.

2166730017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722243342.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 2166730017 is about 46548.1472993287. The cubic root of 2166730017 is about 1294.0019574721.

The spelling of 2166730017 in words is "two billion, one hundred sixty-six million, seven hundred thirty thousand, seventeen".