720583 has 4 divisors (see below), whose sum is σ = 730528. Its totient is φ = 710640.

The previous prime is 720571. The next prime is 720607. The reversal of 720583 is 385027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720583 is a prime.

It is a d-powerful number, because it can be written as 7⁶ + 2¹⁹ + 5⁷ + 0 + 8³ + 3² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4863 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (182632).

2⁷²⁰⁵⁸³ is an apocalyptic number.

720583 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

720583 is a deficient number, since it is larger than the sum of its proper divisors (9945).

720583 is an equidigital number, since it uses as much as digits as its factorization.

720583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9944.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 720583 is about 848.8716039543. The cubic root of 720583 is about 89.6522796914.

The spelling of 720583 in words is "seven hundred twenty thousand, five hundred eighty-three".