6406644882 has 32 divisors (see below), whose sum is σ = 14022838080. Its totient is φ = 1935198720.

The previous prime is 6406644869. The next prime is 6406644883. The reversal of 6406644882 is 2884466046.

It is not an unprimeable number, because it can be changed into a prime (6406644883) 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 15 ways as a sum of consecutive naturals, for example, 134407 + ... + 175722.

It is an arithmetic number, because the mean of its divisors is an integer number (438213690).

Almost surely, 2^6406644882 is an apocalyptic number.

6406644882 is an abundant number, since it is smaller than the sum of its proper divisors (7616193198).

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

6406644882 is a wasteful number, since it uses less digits than its factorization.

6406644882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310458.

The product of its (nonzero) digits is 1769472, while the sum is 48.

The square root of 6406644882 is about 80041.5197381959. The cubic root of 6406644882 is about 1857.2778697353.

It can be divided in two parts, 640664 and 4882, that added together give a palindrome (645546).

The spelling of 6406644882 in words is "six billion, four hundred six million, six hundred forty-four thousand, eight hundred eighty-two".