720875 has 16 divisors (see below), whose sum is σ = 923520. Its totient is φ = 561600.

The previous prime is 720869. The next prime is 720877. The reversal of 720875 is 578027.

It is not a de Polignac number, because 720875 - 2⁸ = 720619 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720875.

It is not an unprimeable number, because it can be changed into a prime (720877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9086 + ... + 9164.

It is an arithmetic number, because the mean of its divisors is an integer number (57720).

2⁷²⁰⁸⁷⁵ is an apocalyptic number.

720875 is a deficient number, since it is larger than the sum of its proper divisors (202645).

720875 is an equidigital number, since it uses as much as digits as its factorization.

720875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 720875 is about 849.0435795647. The cubic root of 720875 is about 89.6643879104.

The spelling of 720875 in words is "seven hundred twenty thousand, eight hundred seventy-five".