493663 has 8 divisors (see below), whose sum is σ = 531360. Its totient is φ = 456960.

The previous prime is 493657. The next prime is 493693. The reversal of 493663 is 366394.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-493663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493643) 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 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (66420).

2⁴⁹³⁶⁶³ is an apocalyptic number.

493663 is a deficient number, since it is larger than the sum of its proper divisors (37697).

493663 is a wasteful number, since it uses less digits than its factorization.

493663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its digits is 11664, while the sum is 31.

The square root of 493663 is about 702.6115569787. The cubic root of 493663 is about 79.0333139420.

It can be divided in two parts, 493 and 663, that added together give a square (1156 = 34²).

The spelling of 493663 in words is "four hundred ninety-three thousand, six hundred sixty-three".