12771873 has 6 divisors (see below), whose sum is σ = 18448274. Its totient is φ = 8514576.

The previous prime is 12771853. The next prime is 12771883. The reversal of 12771873 is 37817721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 219024 = 3543^2 + 468^2 .

It is not a de Polignac number, because 12771873 - 2⁶ = 12771809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12771853) 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, 709540 + ... + 709557.

Almost surely, 2^12771873 is an apocalyptic number.

It is an amenable number.

12771873 is a deficient number, since it is larger than the sum of its proper divisors (5676401).

12771873 is a wasteful number, since it uses less digits than its factorization.

12771873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419103 (or 1419100 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 12771873 is about 3573.7757344299. The cubic root of 12771873 is about 233.7499520528.

The spelling of 12771873 in words is "twelve million, seven hundred seventy-one thousand, eight hundred seventy-three".