704789 has 4 divisors (see below), whose sum is σ = 735456. Its totient is φ = 674124.

The previous prime is 704783. The next prime is 704797. The reversal of 704789 is 987407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987407 = 61 ⋅16187.

It is a cyclic number.

It is not a de Polignac number, because 704789 - 2¹⁶ = 639253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15299 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (183864).

2⁷⁰⁴⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

704789 is a deficient number, since it is larger than the sum of its proper divisors (30667).

704789 is a wasteful number, since it uses less digits than its factorization.

704789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30666.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 704789 is about 839.5171231130. The cubic root of 704789 is about 88.9924245541.

The spelling of 704789 in words is "seven hundred four thousand, seven hundred eighty-nine".