12664811 has 8 divisors (see below), whose sum is σ = 13411920. Its totient is φ = 11925792.

The previous prime is 12664807. The next prime is 12664829. The reversal of 12664811 is 11846621.

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

It is a cyclic number.

It is not a de Polignac number, because 12664811 - 2² = 12664807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12664871) 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, 1361 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (1676490).

Almost surely, 2^12664811 is an apocalyptic number.

12664811 is a deficient number, since it is larger than the sum of its proper divisors (747109).

12664811 is a wasteful number, since it uses less digits than its factorization.

12664811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045.

The product of its digits is 2304, while the sum is 29.

The square root of 12664811 is about 3558.7653758010. The cubic root of 12664811 is about 233.0949713231.

The spelling of 12664811 in words is "twelve million, six hundred sixty-four thousand, eight hundred eleven".