663833 has 6 divisors (see below), whose sum is σ = 705486. Its totient is φ = 624512.

The previous prime is 663827. The next prime is 663853. The reversal of 663833 is 338366.

It can be written as a sum of positive squares in 3 ways, for example, as 258064 + 405769 = 508^2 + 637^2 .

It is not a de Polignac number, because 663833 - 2¹⁸ = 401689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663796 and 663805.

It is not an unprimeable number, because it can be changed into a prime (663823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (117581).

2⁶⁶³⁸³³ is an apocalyptic number.

It is an amenable number.

663833 is a deficient number, since it is larger than the sum of its proper divisors (41653).

663833 is a wasteful number, since it uses less digits than its factorization.

663833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331 (or 2314 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 663833 is about 814.7594737099. The cubic root of 663833 is about 87.2340989022.

The spelling of 663833 in words is "six hundred sixty-three thousand, eight hundred thirty-three".