1366983 has 16 divisors (see below), whose sum is σ = 2043360. Its totient is φ = 903168.

The previous prime is 1366979. The next prime is 1366991. The reversal of 1366983 is 3896631.

It is a happy number.

It is not a de Polignac number, because 1366983 - 2² = 1366979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366903) 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, 5191 + ... + 5447.

It is an arithmetic number, because the mean of its divisors is an integer number (127710).

2^1366983 is an apocalyptic number.

1366983 is a deficient number, since it is larger than the sum of its proper divisors (676377).

1366983 is a wasteful number, since it uses less digits than its factorization.

1366983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 457 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1366983 is about 1169.1804822182. The cubic root of 1366983 is about 110.9824661859.

The spelling of 1366983 in words is "one million, three hundred sixty-six thousand, nine hundred eighty-three".