1366664087 has 2 divisors, whose sum is σ = 1366664088. Its totient is φ = 1366664086.

The previous prime is 1366664083. The next prime is 1366664099. The reversal of 1366664087 is 7804666631.

It is a weak prime.

It is an emirp because it is prime and its reverse (7804666631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1366664087 - 2² = 1366664083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366664083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683332043 + 683332044.

It is an arithmetic number, because the mean of its divisors is an integer number (683332044).

Almost surely, 2^1366664087 is an apocalyptic number.

1366664087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366664087 is an equidigital number, since it uses as much as digits as its factorization.

1366664087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 1366664087 is about 36968.4201312417. The cubic root of 1366664087 is about 1109.7383489007.

The spelling of 1366664087 in words is "one billion, three hundred sixty-six million, six hundred sixty-four thousand, eighty-seven".