216427563 has 24 divisors (see below), whose sum is σ = 345159360. Its totient is φ = 129582960.

The previous prime is 216427559. The next prime is 216427583. The reversal of 216427563 is 365724612.

216427563 is a `hidden beast` number, since 2 + 1 + 642 + 7 + 5 + 6 + 3 = 666.

It is not a de Polignac number, because 216427563 - 2² = 216427559 is a prime.

It is a super-2 number, since 2×216427563² = 93681780052237938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216427543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4953 + ... + 21386.

It is an arithmetic number, because the mean of its divisors is an integer number (14381640).

Almost surely, 2^216427563 is an apocalyptic number.

216427563 is a deficient number, since it is larger than the sum of its proper divisors (128731797).

216427563 is a wasteful number, since it uses less digits than its factorization.

216427563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26439 (or 26436 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 216427563 is about 14711.4772541713. The cubic root of 216427563 is about 600.3956307365.

The spelling of 216427563 in words is "two hundred sixteen million, four hundred twenty-seven thousand, five hundred sixty-three".