709573 has 4 divisors (see below), whose sum is σ = 740448. Its totient is φ = 678700.

The previous prime is 709561. The next prime is 709589. The reversal of 709573 is 375907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709573 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15403 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (185112).

2⁷⁰⁹⁵⁷³ is an apocalyptic number.

It is an amenable number.

709573 is a deficient number, since it is larger than the sum of its proper divisors (30875).

709573 is a wasteful number, since it uses less digits than its factorization.

709573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874.

The product of its (nonzero) digits is 6615, while the sum is 31.

The square root of 709573 is about 842.3615613263. The cubic root of 709573 is about 89.1933263321.

The spelling of 709573 in words is "seven hundred nine thousand, five hundred seventy-three".