6500645615 has 8 divisors (see below), whose sum is σ = 7982188368. Its totient is φ = 5079574080.

The previous prime is 6500645513. The next prime is 6500645629. The reversal of 6500645615 is 5165460056.

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

It is not a de Polignac number, because 6500645615 - 2¹⁸ = 6500383471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15117566 + ... + 15117995.

It is an arithmetic number, because the mean of its divisors is an integer number (997773546).

Almost surely, 2^6500645615 is an apocalyptic number.

6500645615 is a deficient number, since it is larger than the sum of its proper divisors (1481542753).

6500645615 is a wasteful number, since it uses less digits than its factorization.

6500645615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30235609.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 6500645615 is about 80626.5813178259. The cubic root of 6500645615 is about 1866.3173652140.

The spelling of 6500645615 in words is "six billion, five hundred million, six hundred forty-five thousand, six hundred fifteen".