12406777 has 2 divisors, whose sum is σ = 12406778. Its totient is φ = 12406776.

The previous prime is 12406769. The next prime is 12406781. The reversal of 12406777 is 77760421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 44521 = 3516^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 12406777 - 2³ = 12406769 is a prime.

It is not a weakly prime, because it can be changed into another prime (12416777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203388 + 6203389.

It is an arithmetic number, because the mean of its divisors is an integer number (6203389).

Almost surely, 2^12406777 is an apocalyptic number.

It is an amenable number.

12406777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12406777 is an equidigital number, since it uses as much as digits as its factorization.

12406777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 12406777 is about 3522.3255102276. The cubic root of 12406777 is about 231.5010643592.

The spelling of 12406777 in words is "twelve million, four hundred six thousand, seven hundred seventy-seven".