216783883 has 2 divisors, whose sum is σ = 216783884. Its totient is φ = 216783882.

The previous prime is 216783871. The next prime is 216783923. The reversal of 216783883 is 388387612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216783883 is a prime.

It is not a weakly prime, because it can be changed into another prime (216783823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108391941 + 108391942.

It is an arithmetic number, because the mean of its divisors is an integer number (108391942).

Almost surely, 2^216783883 is an apocalyptic number.

216783883 is a deficient number, since it is larger than the sum of its proper divisors (1).

216783883 is an equidigital number, since it uses as much as digits as its factorization.

216783883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 216783883 is about 14723.5825463778. The cubic root of 216783883 is about 600.7249413399.

The spelling of 216783883 in words is "two hundred sixteen million, seven hundred eighty-three thousand, eight hundred eighty-three".