12659957 has 8 divisors (see below), whose sum is σ = 13046616. Its totient is φ = 12275712.

The previous prime is 12659953. The next prime is 12659963. The reversal of 12659957 is 75995621.

It is a happy number.

12659957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9296401 + 3363556 = 3049^2 + 1834^2 .

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

It is not a de Polignac number, because 12659957 - 2² = 12659953 is a prime.

It is a super-2 number, since 2×12659957² = 320549022483698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12659953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21053 + ... + 21645.

It is an arithmetic number, because the mean of its divisors is an integer number (1630827).

Almost surely, 2^12659957 is an apocalyptic number.

It is an amenable number.

12659957 is a deficient number, since it is larger than the sum of its proper divisors (386659).

12659957 is an equidigital number, since it uses as much as digits as its factorization.

12659957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207.

The product of its digits is 170100, while the sum is 44.

The square root of 12659957 is about 3558.0833323575. The cubic root of 12659957 is about 233.0651883396.

The spelling of 12659957 in words is "twelve million, six hundred fifty-nine thousand, nine hundred fifty-seven".