216230647 has 2 divisors, whose sum is σ = 216230648. Its totient is φ = 216230646.

The previous prime is 216230563. The next prime is 216230653. The reversal of 216230647 is 746032612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216230647 - 2⁷ = 216230519 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217230647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108115323 + 108115324.

It is an arithmetic number, because the mean of its divisors is an integer number (108115324).

Almost surely, 2^216230647 is an apocalyptic number.

216230647 is a deficient number, since it is larger than the sum of its proper divisors (1).

216230647 is an equidigital number, since it uses as much as digits as its factorization.

216230647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 216230647 is about 14704.7831333889. The cubic root of 216230647 is about 600.2134860675.

The spelling of 216230647 in words is "two hundred sixteen million, two hundred thirty thousand, six hundred forty-seven".