216703 has 2 divisors, whose sum is σ = 216704. Its totient is φ = 216702.

The previous prime is 216679. The next prime is 216719. The reversal of 216703 is 307612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216703 - 2¹³ = 208511 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216743) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108351 + 108352.

It is an arithmetic number, because the mean of its divisors is an integer number (108352).

2²¹⁶⁷⁰³ is an apocalyptic number.

216703 is a deficient number, since it is larger than the sum of its proper divisors (1).

216703 is an equidigital number, since it uses as much as digits as its factorization.

216703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 216703 is about 465.5136947502. The cubic root of 216703 is about 60.0650221026.

Subtracting 216703 from its reverse (307612), we obtain a palindrome (90909).

It can be divided in two parts, 216 and 703, that added together give a palindrome (919).

The spelling of 216703 in words is "two hundred sixteen thousand, seven hundred three".