550663 has 2 divisors, whose sum is σ = 550664. Its totient is φ = 550662.

The previous prime is 550661. The next prime is 550679. The reversal of 550663 is 366055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550663 - 2¹ = 550661 is a prime.

Together with 550661, it forms a pair of twin primes.

550663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275331 + 275332.

It is an arithmetic number, because the mean of its divisors is an integer number (275332).

2⁵⁵⁰⁶⁶³ is an apocalyptic number.

550663 is a deficient number, since it is larger than the sum of its proper divisors (1).

550663 is an equidigital number, since it uses as much as digits as its factorization.

550663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 550663 is about 742.0667085916. The cubic root of 550663 is about 81.9650356587.

The spelling of 550663 in words is "five hundred fifty thousand, six hundred sixty-three".