6664109312 has 72 divisors (see below), whose sum is σ = 15245427456. Its totient is φ = 2847983616.

The previous prime is 6664109311. The next prime is 6664109323. The reversal of 6664109312 is 2139014666.

It is a super-2 number, since 2×6664109312² = 88820705844570226688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664109311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652598 + ... + 662730.

It is an arithmetic number, because the mean of its divisors is an integer number (211742048).

Almost surely, 2^6664109312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6664109312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7622713728).

6664109312 is an abundant number, since it is smaller than the sum of its proper divisors (8581318144).

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

6664109312 is a wasteful number, since it uses less digits than its factorization.

6664109312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10523 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6664109312 is about 81633.9960555650. The cubic root of 6664109312 is about 1881.8313706953.

The spelling of 6664109312 in words is "six billion, six hundred sixty-four million, one hundred nine thousand, three hundred twelve".