6640003312 has 20 divisors (see below), whose sum is σ = 12957564760. Its totient is φ = 3296115648.

The previous prime is 6640003303. The next prime is 6640003319. The reversal of 6640003312 is 2133000466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640003319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1490583 + ... + 1495030.

It is an arithmetic number, because the mean of its divisors is an integer number (647878238).

Almost surely, 2^6640003312 is an apocalyptic number.

It is an amenable number.

6640003312 is a deficient number, since it is larger than the sum of its proper divisors (6317561448).

6640003312 is a wasteful number, since it uses less digits than its factorization.

6640003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985760 (or 2985754 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 6640003312 is about 81486.2154723116. The cubic root of 6640003312 is about 1879.5595874956.

Adding to 6640003312 its reverse (2133000466), we get a palindrome (8773003778).

The spelling of 6640003312 in words is "six billion, six hundred forty million, three thousand, three hundred twelve".