709613 has 4 divisors (see below), whose sum is σ = 721308. Its totient is φ = 697920.

The previous prime is 709609. The next prime is 709649. The reversal of 709613 is 316907.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 209764 + 499849 = 458^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 709613 - 2² = 709609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5756 + ... + 5877.

It is an arithmetic number, because the mean of its divisors is an integer number (180327).

2⁷⁰⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

709613 is a deficient number, since it is larger than the sum of its proper divisors (11695).

709613 is a wasteful number, since it uses less digits than its factorization.

709613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 709613 is about 842.3853037654. The cubic root of 709613 is about 89.1950023006.

The spelling of 709613 in words is "seven hundred nine thousand, six hundred thirteen".