1266066679 has 2 divisors, whose sum is σ = 1266066680. Its totient is φ = 1266066678.

The previous prime is 1266066677. The next prime is 1266066689. The reversal of 1266066679 is 9766606621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266066679 - 2¹ = 1266066677 is a prime.

Together with 1266066677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266066677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633033339 + 633033340.

It is an arithmetic number, because the mean of its divisors is an integer number (633033340).

Almost surely, 2^1266066679 is an apocalyptic number.

1266066679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266066679 is an equidigital number, since it uses as much as digits as its factorization.

1266066679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 1266066679 is about 35581.8307426698. The cubic root of 1266066679 is about 1081.8129924981.

The spelling of 1266066679 in words is "one billion, two hundred sixty-six million, sixty-six thousand, six hundred seventy-nine".