978317 has 8 divisors (see below), whose sum is σ = 1017336. Its totient is φ = 940032.

The previous prime is 978287. The next prime is 978323. The reversal of 978317 is 713879.

It can be written as a sum of positive squares in 4 ways, for example, as 249001 + 729316 = 499^2 + 854^2 .

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 978317 - 2¹⁸ = 716173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978317.

It is not an unprimeable number, because it can be changed into a prime (978337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (127167).

2⁹⁷⁸³¹⁷ is an apocalyptic number.

It is an amenable number.

978317 is a deficient number, since it is larger than the sum of its proper divisors (39019).

978317 is a wasteful number, since it uses less digits than its factorization.

978317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its digits is 10584, while the sum is 35.

The square root of 978317 is about 989.0990850264. The cubic root of 978317 is about 99.2719455646.

The spelling of 978317 in words is "nine hundred seventy-eight thousand, three hundred seventeen".