12957797 has 2 divisors, whose sum is σ = 12957798. Its totient is φ = 12957796.

The previous prime is 12957781. The next prime is 12957821. The reversal of 12957797 is 79775921.

12957797 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., 6974881 + 5982916 = 2641^2 + 2446^2 .

It is a cyclic number.

It is not a de Polignac number, because 12957797 - 2⁴ = 12957781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12957097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478898 + 6478899.

It is an arithmetic number, because the mean of its divisors is an integer number (6478899).

Almost surely, 2^12957797 is an apocalyptic number.

It is an amenable number.

12957797 is a deficient number, since it is larger than the sum of its proper divisors (1).

12957797 is an equidigital number, since it uses as much as digits as its factorization.

12957797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 47.

The square root of 12957797 is about 3599.6940147740. The cubic root of 12957797 is about 234.8787483742.

The spelling of 12957797 in words is "twelve million, nine hundred fifty-seven thousand, seven hundred ninety-seven".