1266677 has 2 divisors, whose sum is σ = 1266678. Its totient is φ = 1266676.

The previous prime is 1266631. The next prime is 1266719. The reversal of 1266677 is 7766621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136356 + 130321 = 1066^2 + 361^2 .

It is an emirp because it is prime and its reverse (7766621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266677 - 2¹⁰ = 1265653 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633338 + 633339.

It is an arithmetic number, because the mean of its divisors is an integer number (633339).

2^1266677 is an apocalyptic number.

It is an amenable number.

1266677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266677 is an equidigital number, since it uses as much as digits as its factorization.

1266677 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 1266677 is about 1125.4674584367. The cubic root of 1266677 is about 108.1986797752.

The spelling of 1266677 in words is "one million, two hundred sixty-six thousand, six hundred seventy-seven".