1366664099 has 2 divisors, whose sum is σ = 1366664100. Its totient is φ = 1366664098.

The previous prime is 1366664087. The next prime is 1366664113. The reversal of 1366664099 is 9904666631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1366664099 - 2⁴ = 1366664083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1366664059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683332049 + 683332050.

It is an arithmetic number, because the mean of its divisors is an integer number (683332050).

Almost surely, 2^1366664099 is an apocalyptic number.

1366664099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366664099 is an equidigital number, since it uses as much as digits as its factorization.

1366664099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 1366664099 is about 36968.4202935424. The cubic root of 1366664099 is about 1109.7383521488.

The spelling of 1366664099 in words is "one billion, three hundred sixty-six million, six hundred sixty-four thousand, ninety-nine".