713609 has 8 divisors (see below), whose sum is σ = 813960. Its totient is φ = 619776.

The previous prime is 713599. The next prime is 713611. The reversal of 713609 is 906317.

713609 = 153² + 154² + ... + 178².

It is a happy number.

713609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41209 + 672400 = 203^2 + 820^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 713609 - 2⁸ = 713353 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 713609.

It is not an unprimeable number, because it can be changed into a prime (713309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (101745).

2⁷¹³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

713609 is a deficient number, since it is larger than the sum of its proper divisors (100351).

713609 is a wasteful number, since it uses less digits than its factorization.

713609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259.

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

The square root of 713609 is about 844.7538102903. The cubic root of 713609 is about 89.3621151165.

The spelling of 713609 in words is "seven hundred thirteen thousand, six hundred nine".