12664097 has 4 divisors (see below), whose sum is σ = 13100820. Its totient is φ = 12227376.

The previous prime is 12664079. The next prime is 12664109. The reversal of 12664097 is 79046621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5216656 + 7447441 = 2284^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 12664097 - 2⁶ = 12664033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12664037) 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, 218318 + ... + 218375.

It is an arithmetic number, because the mean of its divisors is an integer number (3275205).

Almost surely, 2^12664097 is an apocalyptic number.

It is an amenable number.

12664097 is a deficient number, since it is larger than the sum of its proper divisors (436723).

12664097 is an equidigital number, since it uses as much as digits as its factorization.

12664097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436722.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 12664097 is about 3558.6650586983. The cubic root of 12664097 is about 233.0905908672.

The spelling of 12664097 in words is "twelve million, six hundred sixty-four thousand, ninety-seven".