545663 has 2 divisors, whose sum is σ = 545664. Its totient is φ = 545662.

The previous prime is 545651. The next prime is 545711. The reversal of 545663 is 366545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545663 - 2⁴ = 545647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272831 + 272832.

It is an arithmetic number, because the mean of its divisors is an integer number (272832).

2⁵⁴⁵⁶⁶³ is an apocalyptic number.

545663 is a deficient number, since it is larger than the sum of its proper divisors (1).

545663 is an equidigital number, since it uses as much as digits as its factorization.

545663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 545663 is about 738.6900567897. The cubic root of 545663 is about 81.7162011490.

The spelling of 545663 in words is "five hundred forty-five thousand, six hundred sixty-three".