659863 has 2 divisors, whose sum is σ = 659864. Its totient is φ = 659862.

The previous prime is 659849. The next prime is 659873. The reversal of 659863 is 368956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659863 - 2⁵ = 659831 is a prime.

659863 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329931 + 329932.

It is an arithmetic number, because the mean of its divisors is an integer number (329932).

2⁶⁵⁹⁸⁶³ is an apocalyptic number.

659863 is a deficient number, since it is larger than the sum of its proper divisors (1).

659863 is an equidigital number, since it uses as much as digits as its factorization.

659863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 659863 is about 812.3195184162. The cubic root of 659863 is about 87.0598522397.

The spelling of 659863 in words is "six hundred fifty-nine thousand, eight hundred sixty-three".