12346661 has 2 divisors, whose sum is σ = 12346662. Its totient is φ = 12346660.

The previous prime is 12346657. The next prime is 12346679. The reversal of 12346661 is 16664321.

It is a happy number.

12346661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7480225 + 4866436 = 2735^2 + 2206^2 .

It is an emirp because it is prime and its reverse (16664321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12346661 - 2² = 12346657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12346601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173330 + 6173331.

It is an arithmetic number, because the mean of its divisors is an integer number (6173331).

Almost surely, 2^12346661 is an apocalyptic number.

It is an amenable number.

12346661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12346661 is an equidigital number, since it uses as much as digits as its factorization.

12346661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 12346661 is about 3513.7815811459. The cubic root of 12346661 is about 231.1265524710.

The spelling of 12346661 in words is "twelve million, three hundred forty-six thousand, six hundred sixty-one".