12664064 has 72 divisors (see below), whose sum is σ = 29826048. Its totient is φ = 5253120.

The previous prime is 12664063. The next prime is 12664079. The reversal of 12664064 is 46046621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664061) 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, 66209 + ... + 66399.

Almost surely, 2^12664064 is an apocalyptic number.

12664064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14913024).

12664064 is an abundant number, since it is smaller than the sum of its proper divisors (17161984).

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

12664064 is an equidigital number, since it uses as much as digits as its factorization.

12664064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 12664064 is about 3558.6604221252. The cubic root of 12664064 is about 233.0903884052.

The spelling of 12664064 in words is "twelve million, six hundred sixty-four thousand, sixty-four".