720992916 has 288 divisors, whose sum is σ = 2339850240. Its totient is φ = 182476800.

The previous prime is 720992903. The next prime is 720992917. The reversal of 720992916 is 619299027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720992917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8101000 + ... + 8101088.

It is an arithmetic number, because the mean of its divisors is an integer number (8124480).

Almost surely, 2^720992916 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 720992916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169925120).

720992916 is an abundant number, since it is smaller than the sum of its proper divisors (1618857324).

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

720992916 is a wasteful number, since it uses less digits than its factorization.

720992916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 720992916 is about 26851.3112528979. The cubic root of 720992916 is about 896.6927654788.

The spelling of 720992916 in words is "seven hundred twenty million, nine hundred ninety-two thousand, nine hundred sixteen".