12671957 has 8 divisors (see below), whose sum is σ = 12941880. Its totient is φ = 12404160.

The previous prime is 12671951. The next prime is 12671959. The reversal of 12671957 is 75917621.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 12348196 = 569^2 + 3514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12671957 - 2¹² = 12667861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12671957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17519 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (1617735).

Almost surely, 2^12671957 is an apocalyptic number.

It is an amenable number.

12671957 is a deficient number, since it is larger than the sum of its proper divisors (269923).

12671957 is an equidigital number, since it uses as much as digits as its factorization.

12671957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its digits is 26460, while the sum is 38.

The square root of 12671957 is about 3559.7692340937. The cubic root of 12671957 is about 233.1388036255.

The spelling of 12671957 in words is "twelve million, six hundred seventy-one thousand, nine hundred fifty-seven".