216663341 has 2 divisors, whose sum is σ = 216663342. Its totient is φ = 216663340.

The previous prime is 216663329. The next prime is 216663353. The reversal of 216663341 is 143366612.

It is a balanced prime because it is at equal distance from previous prime (216663329) and next prime (216663353).

It can be written as a sum of positive squares in only one way, i.e., 194714116 + 21949225 = 13954^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 216663341 - 2¹⁴ = 216646957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216663298 and 216663307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216663361) 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, 108331670 + 108331671.

It is an arithmetic number, because the mean of its divisors is an integer number (108331671).

Almost surely, 2^216663341 is an apocalyptic number.

It is an amenable number.

216663341 is a deficient number, since it is larger than the sum of its proper divisors (1).

216663341 is an equidigital number, since it uses as much as digits as its factorization.

216663341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 216663341 is about 14719.4884761666. The cubic root of 216663341 is about 600.6135769546.

The spelling of 216663341 in words is "two hundred sixteen million, six hundred sixty-three thousand, three hundred forty-one".