12664500 has 48 divisors (see below), whose sum is σ = 36883392. Its totient is φ = 3376800.

The previous prime is 12664499. The next prime is 12664501. The reversal of 12664500 is 546621.

12664500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12664499) and next prime (12664501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2722 + ... + 5721.

It is an arithmetic number, because the mean of its divisors is an integer number (768404).

Almost surely, 2^12664500 is an apocalyptic number.

12664500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12664500 is an abundant number, since it is smaller than the sum of its proper divisors (24218892).

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

12664500 is a wasteful number, since it uses less digits than its factorization.

12664500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8465 (or 8453 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 12664500 is about 3558.7216806039. The cubic root of 12664500 is about 233.0930633296.

It can be divided in two parts, 1266 and 4500, that multiplied together give a triangular number (5697000 = T₃₃₇₅).

The spelling of 12664500 in words is "twelve million, six hundred sixty-four thousand, five hundred".