216435563 has 2 divisors, whose sum is σ = 216435564. Its totient is φ = 216435562.

The previous prime is 216435547. The next prime is 216435577. The reversal of 216435563 is 365534612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216435563 - 2⁴ = 216435547 is a prime.

It is a super-2 number, since 2×216435563² = 93688705862253938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216435763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108217781 + 108217782.

It is an arithmetic number, because the mean of its divisors is an integer number (108217782).

Almost surely, 2^216435563 is an apocalyptic number.

216435563 is a deficient number, since it is larger than the sum of its proper divisors (1).

216435563 is an equidigital number, since it uses as much as digits as its factorization.

216435563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

The square root of 216435563 is about 14711.7491482148. The cubic root of 216435563 is about 600.4030282938.

The spelling of 216435563 in words is "two hundred sixteen million, four hundred thirty-five thousand, five hundred sixty-three".