704440 has 32 divisors (see below), whose sum is σ = 1730160. Its totient is φ = 256000.

The previous prime is 704419. The next prime is 704441. The reversal of 704440 is 44407.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361 + ... + 1240.

2⁷⁰⁴⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

704440 is an abundant number, since it is smaller than the sum of its proper divisors (1025720).

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

704440 is a wasteful number, since it uses less digits than its factorization.

704440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 704440 is about 839.3092397919. The cubic root of 704440 is about 88.9777329305.

Adding to 704440 its reverse (44407), we get a palindrome (748847).

The spelling of 704440 in words is "seven hundred four thousand, four hundred forty", and thus it is an iban number.