663319 has 2 divisors, whose sum is σ = 663320. Its totient is φ = 663318.

The previous prime is 663301. The next prime is 663331. The reversal of 663319 is 913366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663319 - 2⁷ = 663191 is a prime.

It is a super-2 number, since 2×663319² = 879984191522, which contains 22 as substring.

663319 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663349) 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 as a sum of consecutive naturals, namely, 331659 + 331660.

It is an arithmetic number, because the mean of its divisors is an integer number (331660).

2⁶⁶³³¹⁹ is an apocalyptic number.

663319 is a deficient number, since it is larger than the sum of its proper divisors (1).

663319 is an equidigital number, since it uses as much as digits as its factorization.

663319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 28.

The square root of 663319 is about 814.4439821130. The cubic root of 663319 is about 87.2115782258.

Subtracting 663319 from its reverse (913366), we obtain a cube (250047 = 63³).

The spelling of 663319 in words is "six hundred sixty-three thousand, three hundred nineteen".