12136613 has 2 divisors, whose sum is σ = 12136614. Its totient is φ = 12136612.

The previous prime is 12136609. The next prime is 12136633. The reversal of 12136613 is 31663121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11303044 + 833569 = 3362^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 12136613 - 2² = 12136609 is a prime.

It is a super-2 number, since 2×12136613² = 294594750223538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12136633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6068306 + 6068307.

It is an arithmetic number, because the mean of its divisors is an integer number (6068307).

Almost surely, 2^12136613 is an apocalyptic number.

It is an amenable number.

12136613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12136613 is an equidigital number, since it uses as much as digits as its factorization.

12136613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 12136613 is about 3483.7641998275. The cubic root of 12136613 is about 229.8083658962.

Adding to 12136613 its reverse (31663121), we get a palindrome (43799734).

The spelling of 12136613 in words is "twelve million, one hundred thirty-six thousand, six hundred thirteen".