1366693 has 2 divisors, whose sum is σ = 1366694. Its totient is φ = 1366692.

The previous prime is 1366667. The next prime is 1366709. The reversal of 1366693 is 3966631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954529 + 412164 = 977^2 + 642^2 .

It is an emirp because it is prime and its reverse (3966631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1366693 - 2⁵ = 1366661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366643) 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 as a sum of consecutive naturals, namely, 683346 + 683347.

It is an arithmetic number, because the mean of its divisors is an integer number (683347).

2^1366693 is an apocalyptic number.

It is an amenable number.

1366693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366693 is an equidigital number, since it uses as much as digits as its factorization.

1366693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 1366693 is about 1169.0564571482. The cubic root of 1366693 is about 110.9746174681.

The spelling of 1366693 in words is "one million, three hundred sixty-six thousand, six hundred ninety-three".