663623383 has 2 divisors, whose sum is σ = 663623384. Its totient is φ = 663623382.

The previous prime is 663623351. The next prime is 663623399. The reversal of 663623383 is 383326366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663623383 - 2⁵ = 663623351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663623183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331811691 + 331811692.

It is an arithmetic number, because the mean of its divisors is an integer number (331811692).

Almost surely, 2^663623383 is an apocalyptic number.

663623383 is a deficient number, since it is larger than the sum of its proper divisors (1).

663623383 is an equidigital number, since it uses as much as digits as its factorization.

663623383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 40.

The square root of 663623383 is about 25760.8886298590. Note that the first 3 decimals coincide. The cubic root of 663623383 is about 872.2491603282.

The spelling of 663623383 in words is "six hundred sixty-three million, six hundred twenty-three thousand, three hundred eighty-three".