216898543 has 2 divisors, whose sum is σ = 216898544. Its totient is φ = 216898542.

The previous prime is 216898541. The next prime is 216898567. The reversal of 216898543 is 345898612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216898543 - 2¹ = 216898541 is a prime.

Together with 216898541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 216898493 and 216898502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216898541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108449271 + 108449272.

It is an arithmetic number, because the mean of its divisors is an integer number (108449272).

Almost surely, 2^216898543 is an apocalyptic number.

216898543 is a deficient number, since it is larger than the sum of its proper divisors (1).

216898543 is an equidigital number, since it uses as much as digits as its factorization.

216898543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 216898543 is about 14727.4757850760. The cubic root of 216898543 is about 600.8308332551.

The spelling of 216898543 in words is "two hundred sixteen million, eight hundred ninety-eight thousand, five hundred forty-three".