704890 has 8 divisors (see below), whose sum is σ = 1268820. Its totient is φ = 281952.

The previous prime is 704867. The next prime is 704897. The reversal of 704890 is 98407.

704890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 82369 = 789^2 + 287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704897) 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, 35235 + ... + 35254.

2⁷⁰⁴⁸⁹⁰ is an apocalyptic number.

704890 is a deficient number, since it is larger than the sum of its proper divisors (563930).

704890 is a wasteful number, since it uses less digits than its factorization.

704890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70496.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 704890 is about 839.5772745853. The cubic root of 704890 is about 88.9966753797.

The spelling of 704890 in words is "seven hundred four thousand, eight hundred ninety".