1366597 has 2 divisors, whose sum is σ = 1366598. Its totient is φ = 1366596.

The previous prime is 1366577. The next prime is 1366601. The reversal of 1366597 is 7956631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 36 = 1169^2 + 6^2 .

It is an emirp because it is prime and its reverse (7956631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366507) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683298 + 683299.

It is an arithmetic number, because the mean of its divisors is an integer number (683299).

2^1366597 is an apocalyptic number.

It is an amenable number.

1366597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366597 is an equidigital number, since it uses as much as digits as its factorization.

1366597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 37.

The square root of 1366597 is about 1169.0153976745. The cubic root of 1366597 is about 110.9720190273.

The spelling of 1366597 in words is "one million, three hundred sixty-six thousand, five hundred ninety-seven".