6506550 has 72 divisors (see below), whose sum is σ = 18425160. Its totient is φ = 1641600.

The previous prime is 6506491. The next prime is 6506557. The reversal of 6506550 is 556056.

6506550 is a `hidden beast` number, since 6 + 5 + 0 + 655 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8170 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (255905).

Almost surely, 2^6506550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6506550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9212580).

6506550 is an abundant number, since it is smaller than the sum of its proper divisors (11918610).

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

6506550 is a wasteful number, since it uses less digits than its factorization.

6506550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 6506550 is about 2550.7939940340. The cubic root of 6506550 is about 186.6882238426.

It can be divided in two parts, 6506 and 550, that added together give a square (7056 = 84²).

The spelling of 6506550 in words is "six million, five hundred six thousand, five hundred fifty".