12774661 has 2 divisors, whose sum is σ = 12774662. Its totient is φ = 12774660.

The previous prime is 12774649. The next prime is 12774673. The reversal of 12774661 is 16647721.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12774649) and next prime (12774673).

It can be written as a sum of positive squares in only one way, i.e., 7322436 + 5452225 = 2706^2 + 2335^2 .

It is an emirp because it is prime and its reverse (16647721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12774661 - 2¹⁹ = 12250373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12774611) 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, 6387330 + 6387331.

It is an arithmetic number, because the mean of its divisors is an integer number (6387331).

Almost surely, 2^12774661 is an apocalyptic number.

It is an amenable number.

12774661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12774661 is an equidigital number, since it uses as much as digits as its factorization.

12774661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 12774661 is about 3574.1657767932. The cubic root of 12774661 is about 233.7669594108.

The spelling of 12774661 in words is "twelve million, seven hundred seventy-four thousand, six hundred sixty-one".