6550663 has 12 divisors (see below), whose sum is σ = 7799880. Its totient is φ = 5482512.

The previous prime is 6550651. The next prime is 6550669. The reversal of 6550663 is 3660556.

It is a happy number.

It is not a de Polignac number, because 6550663 - 2⁵ = 6550631 is a prime.

It is a super-2 number, since 2×6550663² = 85822371479138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550669) 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 in 11 ways as a sum of consecutive naturals, for example, 553 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (649990).

Almost surely, 2^6550663 is an apocalyptic number.

6550663 is a deficient number, since it is larger than the sum of its proper divisors (1249217).

6550663 is a wasteful number, since it uses less digits than its factorization.

6550663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166 (or 3159 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 6550663 is about 2559.4263029046. The cubic root of 6550663 is about 187.1091758599.

The spelling of 6550663 in words is "six million, five hundred fifty thousand, six hundred sixty-three".