12664356 has 12 divisors (see below), whose sum is σ = 29550192. Its totient is φ = 4221448.

The previous prime is 12664343. The next prime is 12664357. The reversal of 12664356 is 65346621.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12664357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527670 + ... + 527693.

It is an arithmetic number, because the mean of its divisors is an integer number (2462516).

Almost surely, 2^12664356 is an apocalyptic number.

It is an amenable number.

12664356 is an abundant number, since it is smaller than the sum of its proper divisors (16885836).

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

12664356 is a wasteful number, since it uses less digits than its factorization.

12664356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055370 (or 1055368 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 12664356 is about 3558.7014485624. The cubic root of 12664356 is about 233.0921798751.

The spelling of 12664356 in words is "twelve million, six hundred sixty-four thousand, three hundred fifty-six".