12661764 has 48 divisors (see below), whose sum is σ = 30890496. Its totient is φ = 4032000.

The previous prime is 12661741. The next prime is 12661769. The reversal of 12661764 is 46716621.

It is not an unprimeable number, because it can be changed into a prime (12661769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37404 + ... + 37740.

It is an arithmetic number, because the mean of its divisors is an integer number (643552).

Almost surely, 2^12661764 is an apocalyptic number.

It is an amenable number.

12661764 is an abundant number, since it is smaller than the sum of its proper divisors (18228732).

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

12661764 is a wasteful number, since it uses less digits than its factorization.

12661764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 474 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 12661764 is about 3558.3372521446. The cubic root of 12661764 is about 233.0762765489.

The spelling of 12661764 in words is "twelve million, six hundred sixty-one thousand, seven hundred sixty-four".