12604921 has 8 divisors (see below), whose sum is σ = 14541120. Its totient is φ = 10702608.

The previous prime is 12604919. The next prime is 12604931. The reversal of 12604921 is 12940621.

12604921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12604921 - 2¹ = 12604919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604931) 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, 7666 + ... + 9163.

It is an arithmetic number, because the mean of its divisors is an integer number (1817640).

Almost surely, 2^12604921 is an apocalyptic number.

It is an amenable number.

12604921 is a deficient number, since it is larger than the sum of its proper divisors (1936199).

12604921 is a wasteful number, since it uses less digits than its factorization.

12604921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16943.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12604921 is about 3550.3409695408. The cubic root of 12604921 is about 232.7269668621.

The spelling of 12604921 in words is "twelve million, six hundred four thousand, nine hundred twenty-one".