720567 has 18 divisors (see below), whose sum is σ = 1104792. Its totient is φ = 451704.

The previous prime is 720547. The next prime is 720569. The reversal of 720567 is 765027.

It is not a de Polignac number, because 720567 - 2⁷ = 720439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720567.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720567.

It is not an unprimeable number, because it can be changed into a prime (720569) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12184 + ... + 12242.

2⁷²⁰⁵⁶⁷ is an apocalyptic number.

720567 is a deficient number, since it is larger than the sum of its proper divisors (384225).

720567 is a wasteful number, since it uses less digits than its factorization.

720567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 720567 is about 848.8621796264. The cubic root of 720567 is about 89.6516161328.

The spelling of 720567 in words is "seven hundred twenty thousand, five hundred sixty-seven".