704520 has 96 divisors (see below), whose sum is σ = 2433600. Its totient is φ = 176256.

The previous prime is 704507. The next prime is 704521. The reversal of 704520 is 25407.

It is a happy number.

704520 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 704493 and 704502.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 704520.

It is not an unprimeable number, because it can be changed into a prime (704521) by changing a digit.

704520 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6789 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (25350).

2⁷⁰⁴⁵²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 704520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216800).

704520 is an abundant number, since it is smaller than the sum of its proper divisors (1729080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

704520 is a wasteful number, since it uses less digits than its factorization.

704520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 704520 is about 839.3568966775. The cubic root of 704520 is about 88.9811010665.

Adding to 704520 its reverse (25407), we get a palindrome (729927).

The spelling of 704520 in words is "seven hundred four thousand, five hundred twenty".