1366323797 has 2 divisors, whose sum is σ = 1366323798. Its totient is φ = 1366323796.

The previous prime is 1366323757. The next prime is 1366323821. The reversal of 1366323797 is 7973236631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1343149201 + 23174596 = 36649^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366323797 - 2⁶ = 1366323733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366323727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683161898 + 683161899.

It is an arithmetic number, because the mean of its divisors is an integer number (683161899).

Almost surely, 2^1366323797 is an apocalyptic number.

It is an amenable number.

1366323797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366323797 is an equidigital number, since it uses as much as digits as its factorization.

1366323797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 47.

The square root of 1366323797 is about 36963.8174029685. The cubic root of 1366323797 is about 1109.6462355050.

The spelling of 1366323797 in words is "one billion, three hundred sixty-six million, three hundred twenty-three thousand, seven hundred ninety-seven".