6418663 has 2 divisors, whose sum is σ = 6418664. Its totient is φ = 6418662.

The previous prime is 6418583. The next prime is 6418693. The reversal of 6418663 is 3668146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6418663 - 2¹⁷ = 6287591 is a prime.

It is a super-3 number, since 3×6418663³ (a number of 21 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6418693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209331 + 3209332.

It is an arithmetic number, because the mean of its divisors is an integer number (3209332).

Almost surely, 2^6418663 is an apocalyptic number.

6418663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418663 is an equidigital number, since it uses as much as digits as its factorization.

6418663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 6418663 is about 2533.5080422213. The cubic root of 6418663 is about 185.8438489808.

The spelling of 6418663 in words is "six million, four hundred eighteen thousand, six hundred sixty-three".