6650066565 has 48 divisors (see below), whose sum is σ = 11653424640. Its totient is φ = 3507857280.

The previous prime is 6650066537. The next prime is 6650066569. The reversal of 6650066565 is 5656600566.

It is not a de Polignac number, because 6650066565 - 2⁸ = 6650066309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6650066565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650066569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4232230 + ... + 4233800.

It is an arithmetic number, because the mean of its divisors is an integer number (242779680).

Almost surely, 2^6650066565 is an apocalyptic number.

It is an amenable number.

6650066565 is a deficient number, since it is larger than the sum of its proper divisors (5003358075).

6650066565 is a wasteful number, since it uses less digits than its factorization.

6650066565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The square root of 6650066565 is about 81547.9402866804. The cubic root of 6650066565 is about 1880.5086300150.

The spelling of 6650066565 in words is "six billion, six hundred fifty million, sixty-six thousand, five hundred sixty-five".