704989 has 2 divisors, whose sum is σ = 704990. Its totient is φ = 704988.

The previous prime is 704983. The next prime is 704993. The reversal of 704989 is 989407.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444889 + 260100 = 667^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 704989 - 2⁷ = 704861 is a prime.

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (704983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352494 + 352495.

It is an arithmetic number, because the mean of its divisors is an integer number (352495).

2⁷⁰⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

704989 is a deficient number, since it is larger than the sum of its proper divisors (1).

704989 is an equidigital number, since it uses as much as digits as its factorization.

704989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 704989 is about 839.6362307571. The cubic root of 704989 is about 89.0008416366. Note that the first 3 decimals are identical.

It can be divided in two parts, 70498 and 9, that added together give a palindrome (70507).

The spelling of 704989 in words is "seven hundred four thousand, nine hundred eighty-nine".