6664512 has 56 divisors (see below), whose sum is σ = 17857216. Its totient is φ = 2193408.

The previous prime is 6664501. The next prime is 6664513. The reversal of 6664512 is 2154666.

It is a self number, because there is not a number n which added to its sum of digits gives 6664512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664513) 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, 19608 + ... + 19944.

Almost surely, 2^6664512 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 6664512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8928608).

6664512 is an abundant number, since it is smaller than the sum of its proper divisors (11192704).

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

6664512 is a wasteful number, since it uses less digits than its factorization.

6664512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 445 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 6664512 is about 2581.5716143466. The cubic root of 6664512 is about 188.1869274018.

The spelling of 6664512 in words is "six million, six hundred sixty-four thousand, five hundred twelve".