12804651 has 24 divisors (see below), whose sum is σ = 19685120. Its totient is φ = 7997616.

The previous prime is 12804607. The next prime is 12804661. The reversal of 12804651 is 15640821.

12804651 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 4 + 651 = 666.

It is not a de Polignac number, because 12804651 - 2⁷ = 12804523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12804661) 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 23 ways as a sum of consecutive naturals, for example, 17250 + ... + 17976.

Almost surely, 2^12804651 is an apocalyptic number.

12804651 is a deficient number, since it is larger than the sum of its proper divisors (6880469).

12804651 is a wasteful number, since it uses less digits than its factorization.

12804651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12804651 is about 3578.3587019750. The cubic root of 12804651 is about 233.9497481396.

The spelling of 12804651 in words is "twelve million, eight hundred four thousand, six hundred fifty-one".