704945 has 4 divisors (see below), whose sum is σ = 845940. Its totient is φ = 563952.

The previous prime is 704933. The next prime is 704947. The reversal of 704945 is 549407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549407 = 263 ⋅2089.

It can be written as a sum of positive squares in 2 ways, for example, as 279841 + 425104 = 529^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 704945 - 2⁴ = 704929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (704947) 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, 70490 + ... + 70499.

It is an arithmetic number, because the mean of its divisors is an integer number (211485).

2⁷⁰⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

704945 is a deficient number, since it is larger than the sum of its proper divisors (140995).

704945 is a wasteful number, since it uses less digits than its factorization.

704945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140994.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 704945 is about 839.6100285251. The cubic root of 704945 is about 88.9989900151.

The spelling of 704945 in words is "seven hundred four thousand, nine hundred forty-five".