6644335086 has 24 divisors (see below), whose sum is σ = 14632062744. Its totient is φ = 2178470160.

The previous prime is 6644335079. The next prime is 6644335123. The reversal of 6644335086 is 6805334466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3024556 + ... + 3026751.

It is an arithmetic number, because the mean of its divisors is an integer number (609669281).

Almost surely, 2^6644335086 is an apocalyptic number.

6644335086 is an abundant number, since it is smaller than the sum of its proper divisors (7987727658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6644335086 is a wasteful number, since it uses less digits than its factorization.

6644335086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051376 (or 6051373 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The square root of 6644335086 is about 81512.7909349201. The cubic root of 6644335086 is about 1879.9682247157.

The spelling of 6644335086 in words is "six billion, six hundred forty-four million, three hundred thirty-five thousand, eighty-six".