12704481 has 6 divisors (see below), whose sum is σ = 18350930. Its totient is φ = 8469648.

The previous prime is 12704467. The next prime is 12704507. The reversal of 12704481 is 18440721.

12704481 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 342225 = 3516^2 + 585^2 .

It is not a de Polignac number, because 12704481 - 2⁷ = 12704353 is a prime.

It is a super-2 number, since 2×12704481² = 322807674958722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12704401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705796 + ... + 705813.

Almost surely, 2^12704481 is an apocalyptic number.

It is an amenable number.

12704481 is a deficient number, since it is larger than the sum of its proper divisors (5646449).

12704481 is a wasteful number, since it uses less digits than its factorization.

12704481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411615 (or 1411612 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 12704481 is about 3564.3345802548. The cubic root of 12704481 is about 233.3380921932.

The spelling of 12704481 in words is "twelve million, seven hundred four thousand, four hundred eighty-one".