318663 has 6 divisors (see below), whose sum is σ = 460304. Its totient is φ = 212436.

The previous prime is 318653. The next prime is 318671. The reversal of 318663 is 366813.

It is not a de Polignac number, because 318663 - 2⁸ = 318407 is a prime.

It is a super-2 number, since 2×318663² = 203092215138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318653) 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 5 ways as a sum of consecutive naturals, for example, 17695 + ... + 17712.

2³¹⁸⁶⁶³ is an apocalyptic number.

318663 is a deficient number, since it is larger than the sum of its proper divisors (141641).

318663 is a wasteful number, since it uses less digits than its factorization.

318663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35413 (or 35410 counting only the distinct ones).

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

The square root of 318663 is about 564.5024357786. The cubic root of 318663 is about 68.3036449790.

It can be divided in two parts, 3186 and 63, that added together give a square (3249 = 57²).

The spelling of 318663 in words is "three hundred eighteen thousand, six hundred sixty-three".