318697 has 4 divisors (see below), whose sum is σ = 319876. Its totient is φ = 317520.

The previous prime is 318691. The next prime is 318701. The reversal of 318697 is 796813.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 69696 + 249001 = 264^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 318697 - 2⁷ = 318569 is a prime.

It is a Duffinian number.

318697 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318691) 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, 43 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (79969).

2³¹⁸⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

318697 is a deficient number, since it is larger than the sum of its proper divisors (1179).

318697 is an equidigital number, since it uses as much as digits as its factorization.

318697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178.

The product of its digits is 9072, while the sum is 34.

The square root of 318697 is about 564.5325499916. The cubic root of 318697 is about 68.3060741296.

The spelling of 318697 in words is "three hundred eighteen thousand, six hundred ninety-seven".