717328 has 20 divisors (see below), whose sum is σ = 1406160. Its totient is φ = 354464.

The previous prime is 717323. The next prime is 717331. The reversal of 717328 is 823717.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 717296 and 717305.

It is not an unprimeable number, because it can be changed into a prime (717323) 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, 1503 + ... + 1921.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁷¹⁷³²⁸ is an apocalyptic number.

It is an amenable number.

717328 is a deficient number, since it is larger than the sum of its proper divisors (688832).

717328 is a wasteful number, since it uses less digits than its factorization.

717328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 528 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 717328 is about 846.9521828297. The cubic root of 717328 is about 89.5170842203.

The spelling of 717328 in words is "seven hundred seventeen thousand, three hundred twenty-eight".