6500645533 has 4 divisors (see below), whose sum is σ = 6710343808. Its totient is φ = 6290947260.

The previous prime is 6500645513. The next prime is 6500645629. The reversal of 6500645533 is 3355460056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6500645533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6500645492 and 6500645501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500645513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104849091 + ... + 104849152.

It is an arithmetic number, because the mean of its divisors is an integer number (1677585952).

Almost surely, 2^6500645533 is an apocalyptic number.

It is an amenable number.

6500645533 is a deficient number, since it is larger than the sum of its proper divisors (209698275).

6500645533 is a wasteful number, since it uses less digits than its factorization.

6500645533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209698274.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 6500645533 is about 80626.5808093088. The cubic root of 6500645533 is about 1866.3173573667.

The spelling of 6500645533 in words is "six billion, five hundred million, six hundred forty-five thousand, five hundred thirty-three".