6550566 has 16 divisors (see below), whose sum is σ = 14292288. Its totient is φ = 1985000.

The previous prime is 6550553. The next prime is 6550631. The reversal of 6550566 is 6650556.

6550566 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49560 + ... + 49691.

It is an arithmetic number, because the mean of its divisors is an integer number (893268).

Almost surely, 2^6550566 is an apocalyptic number.

6550566 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6550566 is an abundant number, since it is smaller than the sum of its proper divisors (7741722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6550566 is a wasteful number, since it uses less digits than its factorization.

6550566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99267.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 6550566 is about 2559.4073532754. The cubic root of 6550566 is about 187.1082523056.

The spelling of 6550566 in words is "six million, five hundred fifty thousand, five hundred sixty-six".