663583 has 2 divisors, whose sum is σ = 663584. Its totient is φ = 663582.

The previous prime is 663581. The next prime is 663587. The reversal of 663583 is 385366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663583 - 2¹ = 663581 is a prime.

Together with 663581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331791 + 331792.

It is an arithmetic number, because the mean of its divisors is an integer number (331792).

2⁶⁶³⁵⁸³ is an apocalyptic number.

663583 is a deficient number, since it is larger than the sum of its proper divisors (1).

663583 is an equidigital number, since it uses as much as digits as its factorization.

663583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 663583 is about 814.6060397517. The cubic root of 663583 is about 87.2231467184.

The spelling of 663583 in words is "six hundred sixty-three thousand, five hundred eighty-three".