6650563 has 4 divisors (see below), whose sum is σ = 6691528. Its totient is φ = 6609600.

The previous prime is 6650561. The next prime is 6650591. The reversal of 6650563 is 3650566.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6650563 - 2¹ = 6650561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650561) 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 3 ways as a sum of consecutive naturals, for example, 20238 + ... + 20563.

It is an arithmetic number, because the mean of its divisors is an integer number (1672882).

Almost surely, 2^6650563 is an apocalyptic number.

6650563 is a deficient number, since it is larger than the sum of its proper divisors (40965).

6650563 is a wasteful number, since it uses less digits than its factorization.

6650563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40964.

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

The square root of 6650563 is about 2578.8685503530. The cubic root of 6650563 is about 188.0555422884.

The spelling of 6650563 in words is "six million, six hundred fifty thousand, five hundred sixty-three".