1366373 has 4 divisors (see below), whose sum is σ = 1403340. Its totient is φ = 1329408.

The previous prime is 1366367. The next prime is 1366397. The reversal of 1366373 is 3736631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3736631 = 563 ⋅6637.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 247009 = 1058^2 + 497^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366373 - 2⁸ = 1366117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366303) 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 3 ways as a sum of consecutive naturals, for example, 18428 + ... + 18501.

It is an arithmetic number, because the mean of its divisors is an integer number (350835).

2^1366373 is an apocalyptic number.

It is an amenable number.

1366373 is a deficient number, since it is larger than the sum of its proper divisors (36967).

1366373 is an equidigital number, since it uses as much as digits as its factorization.

1366373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36966.

The product of its digits is 6804, while the sum is 29.

The square root of 1366373 is about 1168.9195866269. The cubic root of 1366373 is about 110.9659555254.

The spelling of 1366373 in words is "one million, three hundred sixty-six thousand, three hundred seventy-three".