704090 has 16 divisors (see below), whose sum is σ = 1277640. Its totient is φ = 279360.

The previous prime is 704087. The next prime is 704101. The reversal of 704090 is 90407.

It can be written as a sum of positive squares in 4 ways, for example, as 243049 + 461041 = 493^2 + 679^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 704090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616 + ... + 2004.

2⁷⁰⁴⁰⁹⁰ is an apocalyptic number.

704090 is a deficient number, since it is larger than the sum of its proper divisors (573550).

704090 is a wasteful number, since it uses less digits than its factorization.

704090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

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

The square root of 704090 is about 839.1007090928. The cubic root of 704090 is about 88.9629943364.

Adding to 704090 its reverse (90407), we get a palindrome (794497).

The spelling of 704090 in words is "seven hundred four thousand, ninety".