216982463 has 2 divisors, whose sum is σ = 216982464. Its totient is φ = 216982462.

The previous prime is 216982459. The next prime is 216982613. The reversal of 216982463 is 364289612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216982463 - 2² = 216982459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216982463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216972463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108491231 + 108491232.

It is an arithmetic number, because the mean of its divisors is an integer number (108491232).

Almost surely, 2^216982463 is an apocalyptic number.

216982463 is a deficient number, since it is larger than the sum of its proper divisors (1).

216982463 is an equidigital number, since it uses as much as digits as its factorization.

216982463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 216982463 is about 14730.3246060635. The cubic root of 216982463 is about 600.9083122173.

The spelling of 216982463 in words is "two hundred sixteen million, nine hundred eighty-two thousand, four hundred sixty-three".