704009 has 2 divisors, whose sum is σ = 704010. Its totient is φ = 704008.

The previous prime is 704003. The next prime is 704017. The reversal of 704009 is 900407.

704009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640000 + 64009 = 800^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 704009 - 2⁸ = 703753 is a prime.

It is not a weakly prime, because it can be changed into another prime (704003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352004 + 352005.

It is an arithmetic number, because the mean of its divisors is an integer number (352005).

2⁷⁰⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

704009 is a deficient number, since it is larger than the sum of its proper divisors (1).

704009 is an equidigital number, since it uses as much as digits as its factorization.

704009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 704009 is about 839.0524417460. The cubic root of 704009 is about 88.9595827087.

The spelling of 704009 in words is "seven hundred four thousand, nine".