12787937 has 2 divisors, whose sum is σ = 12787938. Its totient is φ = 12787936.

The previous prime is 12787919. The next prime is 12787981. The reversal of 12787937 is 73978721.

It is an a-pointer prime, because the next prime (12787981) can be obtained adding 12787937 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12737761 + 50176 = 3569^2 + 224^2 .

It is an emirp because it is prime and its reverse (73978721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12787937 - 2¹⁰ = 12786913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12787997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393968 + 6393969.

It is an arithmetic number, because the mean of its divisors is an integer number (6393969).

Almost surely, 2^12787937 is an apocalyptic number.

It is an amenable number.

12787937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12787937 is an equidigital number, since it uses as much as digits as its factorization.

12787937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 12787937 is about 3576.0225111148. The cubic root of 12787937 is about 233.8479117398.

The spelling of 12787937 in words is "twelve million, seven hundred eighty-seven thousand, nine hundred thirty-seven".