12730957 has 2 divisors, whose sum is σ = 12730958. Its totient is φ = 12730956.

The previous prime is 12730933. The next prime is 12730979. The reversal of 12730957 is 75903721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 1313316 = 3379^2 + 1146^2 .

It is a cyclic number.

It is not a de Polignac number, because 12730957 - 2⁷ = 12730829 is a prime.

It is a super-2 number, since 2×12730957² = 324154532271698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12730657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365478 + 6365479.

It is an arithmetic number, because the mean of its divisors is an integer number (6365479).

Almost surely, 2^12730957 is an apocalyptic number.

It is an amenable number.

12730957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12730957 is an equidigital number, since it uses as much as digits as its factorization.

12730957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 12730957 is about 3568.0466644931. The cubic root of 12730957 is about 233.5000710719.

The spelling of 12730957 in words is "twelve million, seven hundred thirty thousand, nine hundred fifty-seven".