704521040 has 80 divisors (see below), whose sum is σ = 1685517120. Its totient is φ = 273699840.

The previous prime is 704521031. The next prime is 704521043. The reversal of 704521040 is 40125407.

704521040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 704520997 and 704521015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704521043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137851 + ... + 1138469.

It is an arithmetic number, because the mean of its divisors is an integer number (21068964).

Almost surely, 2^704521040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 704521040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842758560).

704521040 is an abundant number, since it is smaller than the sum of its proper divisors (980996080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

704521040 is a wasteful number, since it uses less digits than its factorization.

704521040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 704521040 is about 26542.8152237098. The cubic root of 704521040 is about 889.8114485056.

Adding to 704521040 its reverse (40125407), we get a palindrome (744646447).

The spelling of 704521040 in words is "seven hundred four million, five hundred twenty-one thousand, forty".