6607663 has 2 divisors, whose sum is σ = 6607664. Its totient is φ = 6607662.

The previous prime is 6607631. The next prime is 6607673. The reversal of 6607663 is 3667066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6607663 - 2⁵ = 6607631 is a prime.

It is a super-2 number, since 2×6607663² = 87322420643138, which contains 22 as substring.

6607663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6607613) 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, 3303831 + 3303832.

It is an arithmetic number, because the mean of its divisors is an integer number (3303832).

Almost surely, 2^6607663 is an apocalyptic number.

6607663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6607663 is an equidigital number, since it uses as much as digits as its factorization.

6607663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 6607663 is about 2570.5374924323. The cubic root of 6607663 is about 187.6503138355.

The spelling of 6607663 in words is "six million, six hundred seven thousand, six hundred sixty-three".