704628 has 54 divisors (see below), whose sum is σ = 1912274. Its totient is φ = 218592.

The previous prime is 704617. The next prime is 704647. The reversal of 704628 is 826407.

It can be written as a sum of positive squares in only one way, i.e., 685584 + 19044 = 828^2 + 138^2 .

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19026 + ... + 19062.

2⁷⁰⁴⁶²⁸ 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 704628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956137).

704628 is an abundant number, since it is smaller than the sum of its proper divisors (1207646).

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

704628 is a wasteful number, since it uses less digits than its factorization.

704628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 704628 is about 839.4212291812. The cubic root of 704628 is about 88.9856476457.

The spelling of 704628 in words is "seven hundred four thousand, six hundred twenty-eight".