316638 has 36 divisors (see below), whose sum is σ = 800280. Its totient is φ = 90216.

The previous prime is 316637. The next prime is 316649. The reversal of 316638 is 836613.

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 316638.

It is not an unprimeable number, because it can be changed into a prime (316633) 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 17 ways as a sum of consecutive naturals, for example, 703 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (22230).

2³¹⁶⁶³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400140).

316638 is an abundant number, since it is smaller than the sum of its proper divisors (483642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

316638 is a wasteful number, since it uses less digits than its factorization.

316638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 371 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 316638 is about 562.7059622929. The cubic root of 316638 is about 68.1586549196.

It can be divided in two parts, 3 and 16638, that added together give a square (16641 = 129²).

The spelling of 316638 in words is "three hundred sixteen thousand, six hundred thirty-eight".