555106663 has 2 divisors, whose sum is σ = 555106664. Its totient is φ = 555106662.

The previous prime is 555106639. The next prime is 555106681. The reversal of 555106663 is 366601555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555106663 - 2⁵ = 555106631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525106663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277553331 + 277553332.

It is an arithmetic number, because the mean of its divisors is an integer number (277553332).

Almost surely, 2^555106663 is an apocalyptic number.

555106663 is a deficient number, since it is larger than the sum of its proper divisors (1).

555106663 is an equidigital number, since it uses as much as digits as its factorization.

555106663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 555106663 is about 23560.7016661219. The cubic root of 555106663 is about 821.8492189342.

The spelling of 555106663 in words is "five hundred fifty-five million, one hundred six thousand, six hundred sixty-three".