6640056115 has 32 divisors (see below), whose sum is σ = 10000972800. Its totient is φ = 4111440000.

The previous prime is 6640056113. The next prime is 6640056121. The reversal of 6640056115 is 5116500466.

It is a happy number.

It is not a de Polignac number, because 6640056115 - 2¹ = 6640056113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6640056113) 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 31 ways as a sum of consecutive naturals, for example, 511 + ... + 115240.

It is an arithmetic number, because the mean of its divisors is an integer number (312530400).

Almost surely, 2^6640056115 is an apocalyptic number.

6640056115 is a deficient number, since it is larger than the sum of its proper divisors (3360916685).

6640056115 is a wasteful number, since it uses less digits than its factorization.

6640056115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115923.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 6640056115 is about 81486.5394712526. The cubic root of 6640056115 is about 1879.5645697281.

The spelling of 6640056115 in words is "six billion, six hundred forty million, fifty-six thousand, one hundred fifteen".