659963 has 2 divisors, whose sum is σ = 659964. Its totient is φ = 659962.

The previous prime is 659951. The next prime is 659983. The reversal of 659963 is 369956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 659963 - 2⁴ = 659947 is a prime.

It is a super-3 number, since 3×659963³ = 862342953331708041, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (659983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329981 + 329982.

It is an arithmetic number, because the mean of its divisors is an integer number (329982).

2⁶⁵⁹⁹⁶³ is an apocalyptic number.

659963 is a deficient number, since it is larger than the sum of its proper divisors (1).

659963 is an equidigital number, since it uses as much as digits as its factorization.

659963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 659963 is about 812.3810682186. The cubic root of 659963 is about 87.0642498927.

The spelling of 659963 in words is "six hundred fifty-nine thousand, nine hundred sixty-three".