12664065 has 16 divisors (see below), whose sum is σ = 21454848. Its totient is φ = 6356736.

The previous prime is 12664063. The next prime is 12664079. The reversal of 12664065 is 56046621.

It is not a de Polignac number, because 12664065 - 2¹ = 12664063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12664061) 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, 24577 + ... + 25086.

It is an arithmetic number, because the mean of its divisors is an integer number (1340928).

Almost surely, 2^12664065 is an apocalyptic number.

12664065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12664065 is a deficient number, since it is larger than the sum of its proper divisors (8790783).

12664065 is a wasteful number, since it uses less digits than its factorization.

12664065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49688.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 12664065 is about 3558.6605626275. The cubic root of 12664065 is about 233.0903945404.

The spelling of 12664065 in words is "twelve million, six hundred sixty-four thousand, sixty-five".