720826560 has 224 divisors, whose sum is σ = 2677363200. Its totient is φ = 182062080.

The previous prime is 720826559. The next prime is 720826591. The reversal of 720826560 is 65628027.

720826560 is a `hidden beast` number, since 72 + 0 + 8 + 26 + 560 = 666.

720826560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161965 + ... + 166355.

Almost surely, 2^720826560 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 720826560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338681600).

720826560 is an abundant number, since it is smaller than the sum of its proper divisors (1956536640).

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

720826560 is a wasteful number, since it uses less digits than its factorization.

720826560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4420 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 720826560 is about 26848.2133483776. The cubic root of 720826560 is about 896.6237949925.

The spelling of 720826560 in words is "seven hundred twenty million, eight hundred twenty-six thousand, five hundred sixty".