720871536 has 360 divisors, whose sum is σ = 2538118800. Its totient is φ = 175042560.

The previous prime is 720871513. The next prime is 720871573. The reversal of 720871536 is 635178027.

720871536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 720871494 and 720871503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4837990 + ... + 4838138.

It is an arithmetic number, because the mean of its divisors is an integer number (7050330).

Almost surely, 2^720871536 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 720871536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269059400).

720871536 is an abundant number, since it is smaller than the sum of its proper divisors (1817247264).

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

720871536 is a wasteful number, since it uses less digits than its factorization.

720871536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 720871536 is about 26849.0509329473. The cubic root of 720871536 is about 896.6424428964.

The spelling of 720871536 in words is "seven hundred twenty million, eight hundred seventy-one thousand, five hundred thirty-six".