2127705673 has 4 divisors (see below), whose sum is σ = 2128452228. Its totient is φ = 2126959120.

The previous prime is 2127705659. The next prime is 2127705691. The reversal of 2127705673 is 3765077212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1161241929 + 966463744 = 34077^2 + 31088^2 .

It is a cyclic number.

It is not a de Polignac number, because 2127705673 - 2⁵ = 2127705641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2127705623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368986 + ... + 374707.

It is an arithmetic number, because the mean of its divisors is an integer number (532113057).

Almost surely, 2^2127705673 is an apocalyptic number.

It is an amenable number.

2127705673 is a deficient number, since it is larger than the sum of its proper divisors (746555).

2127705673 is an equidigital number, since it uses as much as digits as its factorization.

2127705673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746554.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 2127705673 is about 46127.0600949161. The cubic root of 2127705673 is about 1286.1862146669.

The spelling of 2127705673 in words is "two billion, one hundred twenty-seven million, seven hundred five thousand, six hundred seventy-three".