12663171 has 6 divisors (see below), whose sum is σ = 18291260. Its totient is φ = 8442108.

The previous prime is 12663143. The next prime is 12663191. The reversal of 12663171 is 17136621.

12663171 is a `hidden beast` number, since 1 + 26 + 631 + 7 + 1 = 666.

It is not a de Polignac number, because 12663171 - 2⁶ = 12663107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12663121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 703501 + ... + 703518.

Almost surely, 2^12663171 is an apocalyptic number.

12663171 is a deficient number, since it is larger than the sum of its proper divisors (5628089).

12663171 is a wasteful number, since it uses less digits than its factorization.

12663171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407025 (or 1407022 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12663171 is about 3558.5349513529. The cubic root of 12663171 is about 233.0849095265.

Adding to 12663171 its reverse (17136621), we get a palindrome (29799792).

The spelling of 12663171 in words is "twelve million, six hundred sixty-three thousand, one hundred seventy-one".