720915552 has 120 divisors (see below), whose sum is σ = 2423138256. Its totient is φ = 205970688.

The previous prime is 720915541. The next prime is 720915589. The reversal of 720915552 is 255519027.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1723 + ... + 38010.

Almost surely, 2^720915552 is an apocalyptic number.

720915552 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720915552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211569128).

720915552 is an abundant number, since it is smaller than the sum of its proper divisors (1702222704).

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

720915552 is a wasteful number, since it uses less digits than its factorization.

720915552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39762 (or 39745 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 720915552 is about 26849.8706142134. The cubic root of 720915552 is about 896.6606920150.

The spelling of 720915552 in words is "seven hundred twenty million, nine hundred fifteen thousand, five hundred fifty-two".