12679957 has 2 divisors, whose sum is σ = 12679958. Its totient is φ = 12679956.

The previous prime is 12679949. The next prime is 12679987. The reversal of 12679957 is 75997621.

It is a happy number.

12679957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12327121 + 352836 = 3511^2 + 594^2 .

It is a cyclic number.

It is not a de Polignac number, because 12679957 - 2³ = 12679949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12679987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6339978 + 6339979.

It is an arithmetic number, because the mean of its divisors is an integer number (6339979).

Almost surely, 2^12679957 is an apocalyptic number.

It is an amenable number.

12679957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12679957 is an equidigital number, since it uses as much as digits as its factorization.

12679957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 46.

The square root of 12679957 is about 3560.8927251463. The cubic root of 12679957 is about 233.1878546673.

The spelling of 12679957 in words is "twelve million, six hundred seventy-nine thousand, nine hundred fifty-seven".