841663 has 2 divisors, whose sum is σ = 841664. Its totient is φ = 841662.

The previous prime is 841661. The next prime is 841691. The reversal of 841663 is 366148.

It is an a-pointer prime, because the next prime (841691) can be obtained adding 841663 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 841663 - 2¹ = 841661 is a prime.

Together with 841661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (841661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420831 + 420832.

It is an arithmetic number, because the mean of its divisors is an integer number (420832).

2⁸⁴¹⁶⁶³ is an apocalyptic number.

841663 is a deficient number, since it is larger than the sum of its proper divisors (1).

841663 is an equidigital number, since it uses as much as digits as its factorization.

841663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 841663 is about 917.4219312835. The cubic root of 841663 is about 94.4161046329.

The spelling of 841663 in words is "eight hundred forty-one thousand, six hundred sixty-three".