1028663 has 2 divisors, whose sum is σ = 1028664. Its totient is φ = 1028662.

The previous prime is 1028647. The next prime is 1028669. The reversal of 1028663 is 3668201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028663 - 2⁴ = 1028647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514331 + 514332.

It is an arithmetic number, because the mean of its divisors is an integer number (514332).

2^1028663 is an apocalyptic number.

1028663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028663 is an equidigital number, since it uses as much as digits as its factorization.

1028663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1028663 is about 1014.2302499926. The cubic root of 1028663 is about 100.9464474459.

The spelling of 1028663 in words is "one million, twenty-eight thousand, six hundred sixty-three".