721480704 has 132 divisors (see below), whose sum is σ = 2237436504. Its totient is φ = 206094336.

The previous prime is 721480687. The next prime is 721480717. The reversal of 721480704 is 407084127.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148132 + ... + 152924.

Almost surely, 2^721480704 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 721480704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118718252).

721480704 is an abundant number, since it is smaller than the sum of its proper divisors (1515955800).

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

721480704 is a wasteful number, since it uses less digits than its factorization.

721480704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830 (or 4805 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 721480704 is about 26860.3928489514. The cubic root of 721480704 is about 896.8949391562.

The spelling of 721480704 in words is "seven hundred twenty-one million, four hundred eighty thousand, seven hundred four".