12904651 has 4 divisors (see below), whose sum is σ = 12911872. Its totient is φ = 12897432.

The previous prime is 12904643. The next prime is 12904673. The reversal of 12904651 is 15640921.

12904651 is digitally balanced in base 2, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12904651 - 2³ = 12904643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12904631) 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, 1270 + ... + 5236.

It is an arithmetic number, because the mean of its divisors is an integer number (3227968).

Almost surely, 2^12904651 is an apocalyptic number.

12904651 is a deficient number, since it is larger than the sum of its proper divisors (7221).

12904651 is an equidigital number, since it uses as much as digits as its factorization.

12904651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12904651 is about 3592.3044136042. The cubic root of 12904651 is about 234.5571924034.

The spelling of 12904651 in words is "twelve million, nine hundred four thousand, six hundred fifty-one".