12687223 has 2 divisors, whose sum is σ = 12687224. Its totient is φ = 12687222.

The previous prime is 12687211. The next prime is 12687331. The reversal of 12687223 is 32278621.

It is a weak prime.

It is an emirp because it is prime and its reverse (32278621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12687223 - 2²¹ = 10590071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12687523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343611 + 6343612.

It is an arithmetic number, because the mean of its divisors is an integer number (6343612).

Almost surely, 2^12687223 is an apocalyptic number.

12687223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12687223 is an equidigital number, since it uses as much as digits as its factorization.

12687223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 12687223 is about 3561.9128288042. The cubic root of 12687223 is about 233.2323874003.

The spelling of 12687223 in words is "twelve million, six hundred eighty-seven thousand, two hundred twenty-three".