6505005615 has 32 divisors (see below), whose sum is σ = 10703632896. Its totient is φ = 3372021120.

The previous prime is 6505005599. The next prime is 6505005629. The reversal of 6505005615 is 5165005056.

6505005615 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6505005615 - 2⁴ = 6505005599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46830 + ... + 123300.

It is an arithmetic number, because the mean of its divisors is an integer number (334488528).

Almost surely, 2^6505005615 is an apocalyptic number.

6505005615 is a deficient number, since it is larger than the sum of its proper divisors (4198627281).

6505005615 is a wasteful number, since it uses less digits than its factorization.

6505005615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76639.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 6505005615 is about 80653.6150150754. The cubic root of 6505005615 is about 1866.7345199435.

The spelling of 6505005615 in words is "six billion, five hundred five million, five thousand, six hundred fifteen".