713809 has 4 divisors (see below), whose sum is σ = 715504. Its totient is φ = 712116.

The previous prime is 713807. The next prime is 713827. The reversal of 713809 is 908317.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 713809 - 2¹ = 713807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (713807) 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, 334 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (178876).

2⁷¹³⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

713809 is a deficient number, since it is larger than the sum of its proper divisors (1695).

713809 is an equidigital number, since it uses as much as digits as its factorization.

713809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 713809 is about 844.8721796816. The cubic root of 713809 is about 89.3704627100.

The spelling of 713809 in words is "seven hundred thirteen thousand, eight hundred nine".