1266767 has 2 divisors, whose sum is σ = 1266768. Its totient is φ = 1266766.

The previous prime is 1266763. The next prime is 1266779. The reversal of 1266767 is 7676621.

It is a weak prime.

It is an emirp because it is prime and its reverse (7676621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266767 - 2² = 1266763 is a prime.

It is equal to p₉₇₆₇₆ and since 1266767 and 97676 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266761) 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, 633383 + 633384.

It is an arithmetic number, because the mean of its divisors is an integer number (633384).

2^1266767 is an apocalyptic number.

1266767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266767 is an equidigital number, since it uses as much as digits as its factorization.

1266767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 1266767 is about 1125.5074411127. The cubic root of 1266767 is about 108.2012422939.

The spelling of 1266767 in words is "one million, two hundred sixty-six thousand, seven hundred sixty-seven".