721014648 has 32 divisors (see below), whose sum is σ = 1806968400. Its totient is φ = 239747328.

The previous prime is 721014629. The next prime is 721014653. The reversal of 721014648 is 846410127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26911 + ... + 46542.

Almost surely, 2^721014648 is an apocalyptic number.

It is an amenable number.

721014648 is an abundant number, since it is smaller than the sum of its proper divisors (1085953752).

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

721014648 is a wasteful number, since it uses less digits than its factorization.

721014648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73871 (or 73867 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 721014648 is about 26851.7159228233. The cubic root of 721014648 is about 896.7017746895.

The spelling of 721014648 in words is "seven hundred twenty-one million, fourteen thousand, six hundred forty-eight".