12187697 has 2 divisors, whose sum is σ = 12187698. Its totient is φ = 12187696.

The previous prime is 12187687. The next prime is 12187709. The reversal of 12187697 is 79678121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 790321 = 3376^2 + 889^2 .

It is an emirp because it is prime and its reverse (79678121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12187697 - 2¹⁸ = 11925553 is a prime.

It is a Chen prime.

It is equal to p₇₉₉₅₄₇ and since 12187697 and 799547 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12187667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6093848 + 6093849.

It is an arithmetic number, because the mean of its divisors is an integer number (6093849).

Almost surely, 2^12187697 is an apocalyptic number.

It is an amenable number.

12187697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12187697 is an equidigital number, since it uses as much as digits as its factorization.

12187697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 12187697 is about 3491.0882257543. The cubic root of 12187697 is about 230.1303419997.

The spelling of 12187697 in words is "twelve million, one hundred eighty-seven thousand, six hundred ninety-seven".