609717 has 8 divisors (see below), whose sum is σ = 818496. Its totient is φ = 403712.

The previous prime is 609709. The next prime is 609743. The reversal of 609717 is 717906.

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 609717 - 2³ = 609709 is a prime.

609717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609757) 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 7 ways as a sum of consecutive naturals, for example, 108 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2⁶⁰⁹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

609717 is a deficient number, since it is larger than the sum of its proper divisors (208779).

609717 is a wasteful number, since it uses less digits than its factorization.

609717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 609717 is about 780.8437743877. The cubic root of 609717 is about 84.7961435442.

It can be divided in two parts, 609 and 717, that added together give a triangular number (1326 = T₅₁).

The spelling of 609717 in words is "six hundred nine thousand, seven hundred seventeen".