716309 has 4 divisors (see below), whose sum is σ = 781440. Its totient is φ = 651180.

The previous prime is 716299. The next prime is 716321. The reversal of 716309 is 903617.

It is a happy number.

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-716309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716389) 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, 32549 + ... + 32570.

It is an arithmetic number, because the mean of its divisors is an integer number (195360).

2⁷¹⁶³⁰⁹ is an apocalyptic number.

It is an amenable number.

716309 is a deficient number, since it is larger than the sum of its proper divisors (65131).

716309 is a wasteful number, since it uses less digits than its factorization.

716309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65130.

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

The square root of 716309 is about 846.3504002480. The cubic root of 716309 is about 89.4746763139.

The spelling of 716309 in words is "seven hundred sixteen thousand, three hundred nine".