663023 has 4 divisors (see below), whose sum is σ = 665808. Its totient is φ = 660240.

The previous prime is 663007. The next prime is 663031. The reversal of 663023 is 320366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320366 = 2 ⋅160183.

It is a cyclic number.

It is not a de Polignac number, because 663023 - 2⁴ = 663007 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 662986 and 663004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998 + ... + 1523.

It is an arithmetic number, because the mean of its divisors is an integer number (166452).

2⁶⁶³⁰²³ is an apocalyptic number.

663023 is a deficient number, since it is larger than the sum of its proper divisors (2785).

663023 is a wasteful number, since it uses less digits than its factorization.

663023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 663023 is about 814.2622427695. The cubic root of 663023 is about 87.1986038410.

Adding to 663023 its reverse (320366), we get a palindrome (983389).

The spelling of 663023 in words is "six hundred sixty-three thousand, twenty-three".