663316 has 6 divisors (see below), whose sum is σ = 1160810. Its totient is φ = 331656.

The previous prime is 663301. The next prime is 663319. The reversal of 663316 is 613366.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 16900 = 804^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82911 + ... + 82918.

2⁶⁶³³¹⁶ is an apocalyptic number.

It is an amenable number.

663316 is a deficient number, since it is larger than the sum of its proper divisors (497494).

663316 is a wasteful number, since it uses less digits than its factorization.

663316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165833 (or 165831 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 663316 is about 814.4421403636. The cubic root of 663316 is about 87.2114467480.

It can be divided in two parts, 663 and 316, that added together give a palindrome (979).

The spelling of 663316 in words is "six hundred sixty-three thousand, three hundred sixteen".