704318521 has 3 divisors (see below), whose sum is σ = 704345061. Its totient is φ = 704291982.

The previous prime is 704318519. The next prime is 704318557. The reversal of 704318521 is 125813407.

The square root of 704318521 is 26539.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 704318521 - 2¹ = 704318519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (704318501) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13270 + ... + 39808.

It is an arithmetic number, because the mean of its divisors is an integer number (234781687).

Almost surely, 2^704318521 is an apocalyptic number.

704318521 is the 26539-th square number.

704318521 is the 13270-th centered octagonal number.

It is an amenable number.

704318521 is a deficient number, since it is larger than the sum of its proper divisors (26540).

704318521 is an frugal number, since it uses more digits than its factorization.

704318521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53078 (or 26539 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The cubic root of 704318521 is about 889.7261797039.

It can be divided in two parts, 704 and 318521, that added together give a square (319225 = 565²).

The spelling of 704318521 in words is "seven hundred four million, three hundred eighteen thousand, five hundred twenty-one".