720297 has 12 divisors (see below), whose sum is σ = 1048944. Its totient is φ = 476280.

The previous prime is 720289. The next prime is 720299. The reversal of 720297 is 792027.

It is not a de Polignac number, because 720297 - 2³ = 720289 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

720297 is a modest number, since divided by 297 gives 72 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 720297.

It is not an unprimeable number, because it can be changed into a prime (720299) 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, 1222 + ... + 1712.

It is an arithmetic number, because the mean of its divisors is an integer number (87412).

2⁷²⁰²⁹⁷ is an apocalyptic number.

It is an amenable number.

720297 is a deficient number, since it is larger than the sum of its proper divisors (328647).

720297 is a wasteful number, since it uses less digits than its factorization.

720297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 720297 is about 848.7031283081. The cubic root of 720297 is about 89.6404171001.

The spelling of 720297 in words is "seven hundred twenty thousand, two hundred ninety-seven".