720750 has 48 divisors (see below), whose sum is σ = 1858896. Its totient is φ = 186000.

The previous prime is 720743. The next prime is 720763. The reversal of 720750 is 57027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23235 + ... + 23265.

It is an arithmetic number, because the mean of its divisors is an integer number (38727).

2⁷²⁰⁷⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929448).

720750 is an abundant number, since it is smaller than the sum of its proper divisors (1138146).

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

720750 is a wasteful number, since it uses less digits than its factorization.

720750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 720750 is about 848.9699641330. The cubic root of 720750 is about 89.6592049978.

Adding to 720750 its reverse (57027), we get a palindrome (777777).

The spelling of 720750 in words is "seven hundred twenty thousand, seven hundred fifty".