216739363 has 2 divisors, whose sum is σ = 216739364. Its totient is φ = 216739362.

The previous prime is 216739349. The next prime is 216739381. The reversal of 216739363 is 363937612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216739363 - 2⁵ = 216739331 is a prime.

It is not a weakly prime, because it can be changed into another prime (216739463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108369681 + 108369682.

It is an arithmetic number, because the mean of its divisors is an integer number (108369682).

Almost surely, 2^216739363 is an apocalyptic number.

216739363 is a deficient number, since it is larger than the sum of its proper divisors (1).

216739363 is an equidigital number, since it uses as much as digits as its factorization.

216739363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 40.

The square root of 216739363 is about 14722.0706084436. The cubic root of 216739363 is about 600.6838157344.

The spelling of 216739363 in words is "two hundred sixteen million, seven hundred thirty-nine thousand, three hundred sixty-three".