12704641 has 2 divisors, whose sum is σ = 12704642. Its totient is φ = 12704640.

The previous prime is 12704633. The next prime is 12704663. The reversal of 12704641 is 14640721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 2876416 = 3135^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 12704641 - 2³ = 12704633 is a prime.

It is a super-2 number, since 2×12704641² = 322815805877762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12704621) 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 as a sum of consecutive naturals, namely, 6352320 + 6352321.

It is an arithmetic number, because the mean of its divisors is an integer number (6352321).

Almost surely, 2^12704641 is an apocalyptic number.

It is an amenable number.

12704641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12704641 is an equidigital number, since it uses as much as digits as its factorization.

12704641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12704641 is about 3564.3570247662. The cubic root of 12704641 is about 233.3390717410.

The spelling of 12704641 in words is "twelve million, seven hundred four thousand, six hundred forty-one".