720275 has 12 divisors (see below), whose sum is σ = 913632. Its totient is φ = 563040.

The previous prime is 720257. The next prime is 720281. The reversal of 720275 is 572027.

It is not a de Polignac number, because 720275 - 2⁶ = 720211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720275.

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 11 ways as a sum of consecutive naturals, for example, 869 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (76136).

2⁷²⁰²⁷⁵ is an apocalyptic number.

720275 is a deficient number, since it is larger than the sum of its proper divisors (193357).

720275 is a wasteful number, since it uses less digits than its factorization.

720275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 720275 is about 848.6901672578. The cubic root of 720275 is about 89.6395044630.

The spelling of 720275 in words is "seven hundred twenty thousand, two hundred seventy-five".