720600 has 48 divisors (see below), whose sum is σ = 2235720. Its totient is φ = 192000.

The previous prime is 720571. The next prime is 720607. The reversal of 720600 is 6027.

720600 is nontrivially palindromic in base 7.

720600 is a nontrivial binomial coefficient, being equal to C(1201, 2).

It is a Harshad number since it is a multiple of its sum of digits (15).

720600 is an undulating number in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 720600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720607) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1 + ... + 1200.

2⁷²⁰⁶⁰⁰ is an apocalyptic number.

720600 is the 1200-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117860).

720600 is an abundant number, since it is smaller than the sum of its proper divisors (1515120).

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

720600 is a wasteful number, since it uses less digits than its factorization.

720600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 720600 is about 848.8816171882. The cubic root of 720600 is about 89.6529847116.

Adding to 720600 its reverse (6027), we get a palindrome (726627).

The spelling of 720600 in words is "seven hundred twenty thousand, six hundred".