1366803 has 12 divisors (see below), whose sum is σ = 2078440. Its totient is φ = 863136.

The previous prime is 1366801. The next prime is 1366829. The reversal of 1366803 is 3086631.

It is not a de Polignac number, because 1366803 - 2¹ = 1366801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366801) 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 in 11 ways as a sum of consecutive naturals, for example, 3826 + ... + 4167.

2^1366803 is an apocalyptic number.

1366803 is a deficient number, since it is larger than the sum of its proper divisors (711637).

1366803 is a wasteful number, since it uses less digits than its factorization.

1366803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8018 (or 8015 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1366803 is about 1169.1035026891. The cubic root of 1366803 is about 110.9775946986.

The spelling of 1366803 in words is "one million, three hundred sixty-six thousand, eight hundred three".