704840 has 32 divisors (see below), whose sum is σ = 1615680. Its totient is φ = 276672.

The previous prime is 704839. The next prime is 704849. The reversal of 704840 is 48407.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (704849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (50490).

2⁷⁰⁴⁸⁴⁰ 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 704840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807840).

704840 is an abundant number, since it is smaller than the sum of its proper divisors (910840).

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

704840 is a wasteful number, since it uses less digits than its factorization.

704840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 704840 is about 839.5474971674. The cubic root of 704840 is about 88.9945710613.

The spelling of 704840 in words is "seven hundred four thousand, eight hundred forty".