2160206705 has 12 divisors (see below), whose sum is σ = 2664210780. Its totient is φ = 1681452864.

The previous prime is 2160206687. The next prime is 2160206761. The reversal of 2160206705 is 5076020612.

It can be written as a sum of positive squares in 6 ways, for example, as 813903841 + 1346302864 = 28529^2 + 36692^2 .

It is not a de Polignac number, because 2160206705 - 2¹⁴ = 2160190321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150950 + ... + 164639.

It is an arithmetic number, because the mean of its divisors is an integer number (222017565).

Almost surely, 2^2160206705 is an apocalyptic number.

It is an amenable number.

2160206705 is a deficient number, since it is larger than the sum of its proper divisors (504004075).

2160206705 is an equidigital number, since it uses as much as digits as its factorization.

2160206705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315668 (or 315631 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2160206705 is about 46478.0238930185. The cubic root of 2160206705 is about 1292.7020471874.

The spelling of 2160206705 in words is "two billion, one hundred sixty million, two hundred six thousand, seven hundred five".