704512 has 30 divisors (see below), whose sum is σ = 1441748. Its totient is φ = 344064.

The previous prime is 704507. The next prime is 704521. The reversal of 704512 is 215407.

It is a self number, because there is not a number n which added to its sum of digits gives 704512.

It is an unprimeable number.

704512 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16363 + ... + 16405.

704512 is a Friedman number, since it can be written as (50-7)*2^14, using all its digits and the basic arithmetic operations.

2⁷⁰⁴⁵¹² 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 704512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720874).

704512 is an abundant number, since it is smaller than the sum of its proper divisors (737236).

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

704512 is an frugal number, since it uses more digits than its factorization.

704512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 704512 is about 839.3521311107. The cubic root of 704512 is about 88.9807642643.

Adding to 704512 its reverse (215407), we get a palindrome (919919).

The spelling of 704512 in words is "seven hundred four thousand, five hundred twelve".