721077472 has 24 divisors (see below), whose sum is σ = 1424691072. Its totient is φ = 359251200.

The previous prime is 721077407. The next prime is 721077473. The reversal of 721077472 is 274770127.

721077472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721077473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31104 + ... + 49087.

It is an arithmetic number, because the mean of its divisors is an integer number (59362128).

Almost surely, 2^721077472 is an apocalyptic number.

It is an amenable number.

721077472 is a deficient number, since it is larger than the sum of its proper divisors (703613600).

721077472 is a wasteful number, since it uses less digits than its factorization.

721077472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80482 (or 80474 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 37.

The square root of 721077472 is about 26852.8857294705. The cubic root of 721077472 is about 896.7278179682.

The spelling of 721077472 in words is "seven hundred twenty-one million, seventy-seven thousand, four hundred seventy-two".