12071705 has 4 divisors (see below), whose sum is σ = 14486052. Its totient is φ = 9657360.

The previous prime is 12071699. The next prime is 12071713. The reversal of 12071705 is 50717021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50717021 = 227 ⋅223423.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 4293184 = 2789^2 + 2072^2 .

It is not a de Polignac number, because 12071705 - 2¹⁸ = 11809561 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1207166 + ... + 1207175.

It is an arithmetic number, because the mean of its divisors is an integer number (3621513).

Almost surely, 2^12071705 is an apocalyptic number.

It is an amenable number.

12071705 is a deficient number, since it is larger than the sum of its proper divisors (2414347).

12071705 is an equidigital number, since it uses as much as digits as its factorization.

12071705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414346.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 12071705 is about 3474.4359254417. The cubic root of 12071705 is about 229.3979528689.

Adding to 12071705 its reverse (50717021), we get a palindrome (62788726).

The spelling of 12071705 in words is "twelve million, seventy-one thousand, seven hundred five".