6500644869 has 8 divisors (see below), whose sum is σ = 8672732640. Its totient is φ = 4331160176.

The previous prime is 6500644867. The next prime is 6500644879. The reversal of 6500644869 is 9684460056.

It is a happy number.

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 6500644869 - 2¹ = 6500644867 is a prime.

It is a super-2 number, since 2×6500644869² = 84516767425712054322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500644867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644934 + ... + 654935.

It is an arithmetic number, because the mean of its divisors is an integer number (1084091580).

Almost surely, 2^6500644869 is an apocalyptic number.

It is an amenable number.

6500644869 is a deficient number, since it is larger than the sum of its proper divisors (2172087771).

6500644869 is a wasteful number, since it uses less digits than its factorization.

6500644869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301539.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 6500644869 is about 80626.5766915600. The cubic root of 6500644869 is about 1866.3172938225.

The spelling of 6500644869 in words is "six billion, five hundred million, six hundred forty-four thousand, eight hundred sixty-nine".