6646435344 has 80 divisors (see below), whose sum is σ = 19274530240. Its totient is φ = 2192624640.

The previous prime is 6646435333. The next prime is 6646435349. The reversal of 6646435344 is 4435346466.

It is a self number, because there is not a number n which added to its sum of digits gives 6646435344.

It is not an unprimeable number, because it can be changed into a prime (6646435349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37402 + ... + 121209.

It is an arithmetic number, because the mean of its divisors is an integer number (240931628).

Almost surely, 2^6646435344 is an apocalyptic number.

It is an amenable number.

6646435344 is an abundant number, since it is smaller than the sum of its proper divisors (12628094896).

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

6646435344 is a wasteful number, since it uses less digits than its factorization.

6646435344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158725 (or 158713 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 45.

The square root of 6646435344 is about 81525.6729135062. The cubic root of 6646435344 is about 1880.1662882940.

The spelling of 6646435344 in words is "six billion, six hundred forty-six million, four hundred thirty-five thousand, three hundred forty-four".