12664385 has 8 divisors (see below), whose sum is σ = 15520896. Its totient is φ = 9915760.

The previous prime is 12664373. The next prime is 12664423. The reversal of 12664385 is 58346621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12664385 - 2⁴ = 12664369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26711 + ... + 27180.

It is an arithmetic number, because the mean of its divisors is an integer number (1940112).

Almost surely, 2^12664385 is an apocalyptic number.

It is an amenable number.

12664385 is a deficient number, since it is larger than the sum of its proper divisors (2856511).

12664385 is an equidigital number, since it uses as much as digits as its factorization.

12664385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53943.

The product of its digits is 34560, while the sum is 35.

The square root of 12664385 is about 3558.7055230800. The cubic root of 12664385 is about 233.0923577936.

The spelling of 12664385 in words is "twelve million, six hundred sixty-four thousand, three hundred eighty-five".