663433 has 4 divisors (see below), whose sum is σ = 686340. Its totient is φ = 640528.

The previous prime is 663409. The next prime is 663437. The reversal of 663433 is 334366.

663433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 480249 + 183184 = 693^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 663433 - 2¹³ = 655241 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6² + 6⁶ + 4⁸ + 3⁴ + 3⁹ + 3¹² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663398 and 663407.

It is not an unprimeable number, because it can be changed into a prime (663437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11410 + ... + 11467.

It is an arithmetic number, because the mean of its divisors is an integer number (171585).

2⁶⁶³⁴³³ is an apocalyptic number.

It is an amenable number.

663433 is a deficient number, since it is larger than the sum of its proper divisors (22907).

663433 is a wasteful number, since it uses less digits than its factorization.

663433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22906.

The product of its digits is 3888, while the sum is 25.

The square root of 663433 is about 814.5139655034. The cubic root of 663433 is about 87.2165740877.

Adding to 663433 its reverse (334366), we get a palindrome (997799).

The spelling of 663433 in words is "six hundred sixty-three thousand, four hundred thirty-three".