704390 has 8 divisors (see below), whose sum is σ = 1267920. Its totient is φ = 281752.

The previous prime is 704357. The next prime is 704393. The reversal of 704390 is 93407.

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 (704393) 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, 35210 + ... + 35229.

It is an arithmetic number, because the mean of its divisors is an integer number (158490).

2⁷⁰⁴³⁹⁰ is an apocalyptic number.

704390 is a deficient number, since it is larger than the sum of its proper divisors (563530).

704390 is a wasteful number, since it uses less digits than its factorization.

704390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70446.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 704390 is about 839.2794528642. The cubic root of 704390 is about 88.9756277160.

Adding to 704390 its reverse (93407), we get a palindrome (797797).

The spelling of 704390 in words is "seven hundred four thousand, three hundred ninety".