720500 has 48 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 260000.

The previous prime is 720497. The next prime is 720527. The reversal of 720500 is 5027.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 5435 + ... + 5565.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2⁷²⁰⁵⁰⁰ 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 720500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864864).

720500 is an abundant number, since it is smaller than the sum of its proper divisors (1009228).

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

720500 is a wasteful number, since it uses less digits than its factorization.

720500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 720500 is about 848.8227141164. The cubic root of 720500 is about 89.6488373746.

Adding to 720500 its reverse (5027), we get a palindrome (725527).

It can be divided in two parts, 720 and 500, that multiplied together give a square (360000 = 600²).

The spelling of 720500 in words is "seven hundred twenty thousand, five hundred".