12707161 has 4 divisors (see below), whose sum is σ = 12800052. Its totient is φ = 12614272.

The previous prime is 12707147. The next prime is 12707237. The reversal of 12707161 is 16170721.

12707161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5973136 + 6734025 = 2444^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 12707161 - 2⁵ = 12707129 is a prime.

It is a super-2 number, since 2×12707161² = 322943881359842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12702161) 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, 46240 + ... + 46513.

It is an arithmetic number, because the mean of its divisors is an integer number (3200013).

Almost surely, 2^12707161 is an apocalyptic number.

It is an amenable number.

12707161 is a deficient number, since it is larger than the sum of its proper divisors (92891).

12707161 is an equidigital number, since it uses as much as digits as its factorization.

12707161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92890.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 12707161 is about 3564.7105071801. The cubic root of 12707161 is about 233.3544985336.

Adding to 12707161 its reverse (16170721), we get a palindrome (28877882).

The spelling of 12707161 in words is "twelve million, seven hundred seven thousand, one hundred sixty-one".