704709 has 6 divisors (see below), whose sum is σ = 1017926. Its totient is φ = 469800.

The previous prime is 704687. The next prime is 704713. The reversal of 704709 is 907407.

It can be written as a sum of positive squares in only one way, i.e., 459684 + 245025 = 678^2 + 495^2 .

It is not a de Polignac number, because 704709 - 2⁷ = 704581 is a prime.

It is a super-2 number, since 2×704709² = 993229549362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39142 + ... + 39159.

2⁷⁰⁴⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

704709 is a deficient number, since it is larger than the sum of its proper divisors (313217).

704709 is a wasteful number, since it uses less digits than its factorization.

704709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78307 (or 78304 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 704709 is about 839.4694753236. The cubic root of 704709 is about 88.9890572752.

The spelling of 704709 in words is "seven hundred four thousand, seven hundred nine".