704720 has 40 divisors (see below), whose sum is σ = 1714176. Its totient is φ = 268928.

The previous prime is 704719. The next prime is 704731. The reversal of 704720 is 27407.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 704692 and 704701.

It is a congruent number.

It is an unprimeable number.

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, 1649 + ... + 2031.

2⁷⁰⁴⁷²⁰ 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 704720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857088).

704720 is an abundant number, since it is smaller than the sum of its proper divisors (1009456).

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

704720 is a wasteful number, since it uses less digits than its factorization.

704720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 704720 is about 839.4760270550. The cubic root of 704720 is about 88.9895202911.

The spelling of 704720 in words is "seven hundred four thousand, seven hundred twenty", and thus it is an iban number.