6506665433 has 8 divisors (see below), whose sum is σ = 6540578280. Its totient is φ = 6472829440.

The previous prime is 6506665421. The next prime is 6506665439. The reversal of 6506665433 is 3345666056.

It can be written as a sum of positive squares in 4 ways, for example, as 114982729 + 6391682704 = 10723^2 + 79948^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6506665433 - 2¹⁴ = 6506649049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6506665439) 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 7 ways as a sum of consecutive naturals, for example, 154613 + ... + 192141.

It is an arithmetic number, because the mean of its divisors is an integer number (817572285).

Almost surely, 2^6506665433 is an apocalyptic number.

It is an amenable number.

6506665433 is a deficient number, since it is larger than the sum of its proper divisors (33912847).

6506665433 is a wasteful number, since it uses less digits than its factorization.

6506665433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38427.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The square root of 6506665433 is about 80663.9041517332. The cubic root of 6506665433 is about 1866.8932785081.

The spelling of 6506665433 in words is "six billion, five hundred six million, six hundred sixty-five thousand, four hundred thirty-three".