720265 has 16 divisors (see below), whose sum is σ = 1064448. Its totient is φ = 455616.

The previous prime is 720257. The next prime is 720281. The reversal of 720265 is 562027.

720265 = 40² + 41² + ... + 130².

720265 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 720265 - 2³ = 720257 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (66528).

2⁷²⁰²⁶⁵ is an apocalyptic number.

It is an amenable number.

720265 is a deficient number, since it is larger than the sum of its proper divisors (344183).

720265 is a wasteful number, since it uses less digits than its factorization.

720265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 720265 is about 848.6842758058. The cubic root of 720265 is about 89.6390896218.

The spelling of 720265 in words is "seven hundred twenty thousand, two hundred sixty-five".