12689273 has 2 divisors, whose sum is σ = 12689274. Its totient is φ = 12689272.

The previous prime is 12689267. The next prime is 12689279. The reversal of 12689273 is 37298621.

It is a balanced prime because it is at equal distance from previous prime (12689267) and next prime (12689279).

It can be written as a sum of positive squares in only one way, i.e., 9314704 + 3374569 = 3052^2 + 1837^2 .

It is an emirp because it is prime and its reverse (37298621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12689273 - 2¹⁴ = 12672889 is a prime.

It is a super-2 number, since 2×12689273² = 322035298537058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12689279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344636 + 6344637.

It is an arithmetic number, because the mean of its divisors is an integer number (6344637).

Almost surely, 2^12689273 is an apocalyptic number.

It is an amenable number.

12689273 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689273 is an equidigital number, since it uses as much as digits as its factorization.

12689273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 12689273 is about 3562.2005839088. The cubic root of 12689273 is about 233.2449486110.

The spelling of 12689273 in words is "twelve million, six hundred eighty-nine thousand, two hundred seventy-three".