216567263 has 16 divisors (see below), whose sum is σ = 252781440. Its totient is φ = 183448800.

The previous prime is 216567223. The next prime is 216567277. The reversal of 216567263 is 362765612.

It is not a de Polignac number, because 216567263 - 2¹² = 216563167 is a prime.

It is a super-2 number, since 2×216567263² = 93802758806622338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216567223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4256 + ... + 21242.

It is an arithmetic number, because the mean of its divisors is an integer number (15798840).

Almost surely, 2^216567263 is an apocalyptic number.

216567263 is a deficient number, since it is larger than the sum of its proper divisors (36214177).

216567263 is a wasteful number, since it uses less digits than its factorization.

216567263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078.

The product of its digits is 90720, while the sum is 38.

The square root of 216567263 is about 14716.2244818432. The cubic root of 216567263 is about 600.5247843869.

The spelling of 216567263 in words is "two hundred sixteen million, five hundred sixty-seven thousand, two hundred sixty-three".