704955509 has 2 divisors, whose sum is σ = 704955510. Its totient is φ = 704955508.

The previous prime is 704955481. The next prime is 704955523. The reversal of 704955509 is 905559407.

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., 588790225 + 116165284 = 24265^2 + 10778^2 .

It is an emirp because it is prime and its reverse (905559407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 704955509 - 2¹² = 704951413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 704955509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (704955569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352477754 + 352477755.

It is an arithmetic number, because the mean of its divisors is an integer number (352477755).

Almost surely, 2^704955509 is an apocalyptic number.

It is an amenable number.

704955509 is a deficient number, since it is larger than the sum of its proper divisors (1).

704955509 is an equidigital number, since it uses as much as digits as its factorization.

704955509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 704955509 is about 26550.9982674852. The cubic root of 704955509 is about 889.9943226503.

The spelling of 704955509 in words is "seven hundred four million, nine hundred fifty-five thousand, five hundred nine".