720080 has 20 divisors (see below), whose sum is σ = 1674372. Its totient is φ = 288000.

The previous prime is 720059. The next prime is 720089. The reversal of 720080 is 80027.

It can be written as a sum of positive squares in 2 ways, for example, as 190096 + 529984 = 436^2 + 728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4421 + ... + 4580.

2⁷²⁰⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

720080 is an abundant number, since it is smaller than the sum of its proper divisors (954292).

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

720080 is a wasteful number, since it uses less digits than its factorization.

720080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014 (or 9008 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 720080 is about 848.5752765666. The cubic root of 720080 is about 89.6314143673.

The spelling of 720080 in words is "seven hundred twenty thousand, eighty".