1366843 has 2 divisors, whose sum is σ = 1366844. Its totient is φ = 1366842.

The previous prime is 1366837. The next prime is 1366861. The reversal of 1366843 is 3486631.

It is a weak prime.

It is an emirp because it is prime and its reverse (3486631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1366543) 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, 683421 + 683422.

It is an arithmetic number, because the mean of its divisors is an integer number (683422).

2^1366843 is an apocalyptic number.

1366843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366843 is an equidigital number, since it uses as much as digits as its factorization.

1366843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 1366843 is about 1169.1206096892. The cubic root of 1366843 is about 110.9786772883.

It can be divided in two parts, 1366 and 843, that added together give a square (2209 = 47²).

The spelling of 1366843 in words is "one million, three hundred sixty-six thousand, eight hundred forty-three".