721488006 has 16 divisors (see below), whose sum is σ = 1603306800. Its totient is φ = 240495984.

The previous prime is 721487999. The next prime is 721488067. The reversal of 721488006 is 600884127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680391 + ... + 6680498.

It is an arithmetic number, because the mean of its divisors is an integer number (100206675).

Almost surely, 2^721488006 is an apocalyptic number.

721488006 is an abundant number, since it is smaller than the sum of its proper divisors (881818794).

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

721488006 is a wasteful number, since it uses less digits than its factorization.

721488006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13360900 (or 13360894 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 721488006 is about 26860.5287736485. The cubic root of 721488006 is about 896.8979649265.

The spelling of 721488006 in words is "seven hundred twenty-one million, four hundred eighty-eight thousand, six".