997317 has 6 divisors (see below), whose sum is σ = 1440582. Its totient is φ = 664872.

The previous prime is 997309. The next prime is 997319. The reversal of 997317 is 713799.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 224676 = 879^2 + 474^2 .

It is not a de Polignac number, because 997317 - 2³ = 997309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997319) 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 5 ways as a sum of consecutive naturals, for example, 55398 + ... + 55415.

It is an arithmetic number, because the mean of its divisors is an integer number (240097).

2⁹⁹⁷³¹⁷ is an apocalyptic number.

It is an amenable number.

997317 is a deficient number, since it is larger than the sum of its proper divisors (443265).

997317 is a wasteful number, since it uses less digits than its factorization.

997317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110819 (or 110816 counting only the distinct ones).

The product of its digits is 11907, while the sum is 36.

The square root of 997317 is about 998.6575989798. The cubic root of 997317 is about 99.9104865640.

The spelling of 997317 in words is "nine hundred ninety-seven thousand, three hundred seventeen".