1366743 has 16 divisors (see below), whose sum is σ = 2140160. Its totient is φ = 759456.

The previous prime is 1366721. The next prime is 1366747. The reversal of 1366743 is 3476631.

It is not a de Polignac number, because 1366743 - 2¹⁰ = 1365719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366747) 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 in 15 ways as a sum of consecutive naturals, for example, 103 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (133760).

2^1366743 is an apocalyptic number.

1366743 is a deficient number, since it is larger than the sum of its proper divisors (773417).

1366743 is a wasteful number, since it uses less digits than its factorization.

1366743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its digits is 9072, while the sum is 30.

The square root of 1366743 is about 1169.0778417197. The cubic root of 1366743 is about 110.9759707745.

The spelling of 1366743 in words is "one million, three hundred sixty-six thousand, seven hundred forty-three".