704549 has 2 divisors, whose sum is σ = 704550. Its totient is φ = 704548.

The previous prime is 704527. The next prime is 704551. The reversal of 704549 is 945407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 93025 = 782^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-704549 is a prime.

Together with 704551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (704569) by changing a digit.

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 as a sum of consecutive naturals, namely, 352274 + 352275.

It is an arithmetic number, because the mean of its divisors is an integer number (352275).

2⁷⁰⁴⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

704549 is a deficient number, since it is larger than the sum of its proper divisors (1).

704549 is an equidigital number, since it uses as much as digits as its factorization.

704549 is an odious number, because the sum of its binary digits is odd.

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

The square root of 704549 is about 839.3741716303. The cubic root of 704549 is about 88.9823219528.

The spelling of 704549 in words is "seven hundred four thousand, five hundred forty-nine".