12604091 has 4 divisors (see below), whose sum is σ = 12745800. Its totient is φ = 12462384.

The previous prime is 12604061. The next prime is 12604099. The reversal of 12604091 is 19040621.

It is a happy number.

12604091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12604091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70721 + ... + 70898.

It is an arithmetic number, because the mean of its divisors is an integer number (3186450).

Almost surely, 2^12604091 is an apocalyptic number.

12604091 is a deficient number, since it is larger than the sum of its proper divisors (141709).

12604091 is an equidigital number, since it uses as much as digits as its factorization.

12604091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141708.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12604091 is about 3550.2240774351. The cubic root of 12604091 is about 232.7218586026.

The spelling of 12604091 in words is "twelve million, six hundred four thousand, ninety-one".