216754799 has 2 divisors, whose sum is σ = 216754800. Its totient is φ = 216754798.

The previous prime is 216754763. The next prime is 216754801. The reversal of 216754799 is 997457612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216754799 - 2⁸ = 216754543 is a prime.

Together with 216754801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216753799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108377399 + 108377400.

It is an arithmetic number, because the mean of its divisors is an integer number (108377400).

Almost surely, 2^216754799 is an apocalyptic number.

216754799 is a deficient number, since it is larger than the sum of its proper divisors (1).

216754799 is an equidigital number, since it uses as much as digits as its factorization.

216754799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 216754799 is about 14722.5948460181. The cubic root of 216754799 is about 600.6980754657.

The spelling of 216754799 in words is "two hundred sixteen million, seven hundred fifty-four thousand, seven hundred ninety-nine".